The document presents information on the Software Development Life Cycle (SDLC), including:
1) It describes the seven main phases of the SDLC - planning, analysis, design, development, testing, implementation, and maintenance.
2) It discusses several SDLC models like waterfall, iterative, prototyping, spiral and V-model and compares their strengths and weaknesses.
3) It emphasizes the important role of testing in the SDLC and describes different testing types done during the phases.
The document defines the software development life cycle (SDLC) and its phases. It discusses several SDLC models including waterfall, prototype, iterative enhancement, and spiral. The waterfall model follows sequential phases from requirements to maintenance with no overlap. The prototype model involves building prototypes for user feedback. The iterative enhancement model develops software incrementally. The spiral model is divided into risk analysis, engineering, construction, and evaluation cycles. The document also covers software requirements, elicitation through interviews and use cases, analysis through data, behavioral and functional modeling, and documentation in a software requirements specification.
The document discusses several software development life cycle (SDLC) models: Waterfall, V-shaped, structured evolutionary prototyping, rapid application development (RAD), incremental, and spiral. For each model, it describes the key steps, strengths, weaknesses, and scenarios where the model is best applied. The Waterfall model involves sequential phases from requirements to maintenance, while the V-shaped model adds verification and validation phases. Structured evolutionary prototyping uses iterative prototyping for requirements gathering. RAD emphasizes rapid delivery through time-boxing and productivity tools. Incremental development prioritizes requirements delivery in groups. The spiral model incorporates risk analysis, prototyping, and iterative cycles.
This document discusses different process models used in software development. It describes the key phases and characteristics of several common process models including waterfall, prototyping, V-model, incremental, iterative, spiral and agile development models. The waterfall model involves sequential phases from requirements to maintenance without iteration. Prototyping allows for user feedback earlier. The V-model adds verification and validation phases. Incremental and iterative models divide the work into smaller chunks to allow for iteration and user feedback throughout development.
The document discusses the spiral model of software development. The spiral model is an iterative approach that combines prototyping and aspects of the waterfall model. It was defined by Barry Boehm in 1988 as a way to address risks through iterative evaluation and improvement of prototypes. The spiral model is best for medium to high risk projects where requirements are complex or expected to change. It involves evaluating prototypes, defining new prototypes based on learnings, and repeating this process until the final product is delivered.
Mostly people ask what is system development life cycle so, you can read the 7 stages of system development life cycle step by step from IPHS Technologies
Testing is the process of identifying bugs and ensuring software meets requirements. It involves executing programs under different conditions to check specification, functionality, and performance. The objectives of testing are to uncover errors, demonstrate requirements are met, and validate quality with minimal cost. Testing follows a life cycle including planning, design, execution, and reporting. Different methodologies like black box and white box testing are used at various levels from unit to system. The overall goal is to perform effective testing to deliver high quality software.
SDLC is the acronym of Software Development Life Cycle. It is also called as Software development process. The software development life cycle (SDLC) is a framework defining tasks performed at each step in the software development process.
The document defines the software development life cycle (SDLC) and its phases. It discusses several SDLC models including waterfall, prototype, iterative enhancement, and spiral. The waterfall model follows sequential phases from requirements to maintenance with no overlap. The prototype model involves building prototypes for user feedback. The iterative enhancement model develops software incrementally. The spiral model is divided into risk analysis, engineering, construction, and evaluation cycles. The document also covers software requirements, elicitation through interviews and use cases, analysis through data, behavioral and functional modeling, and documentation in a software requirements specification.
The document discusses several software development life cycle (SDLC) models: Waterfall, V-shaped, structured evolutionary prototyping, rapid application development (RAD), incremental, and spiral. For each model, it describes the key steps, strengths, weaknesses, and scenarios where the model is best applied. The Waterfall model involves sequential phases from requirements to maintenance, while the V-shaped model adds verification and validation phases. Structured evolutionary prototyping uses iterative prototyping for requirements gathering. RAD emphasizes rapid delivery through time-boxing and productivity tools. Incremental development prioritizes requirements delivery in groups. The spiral model incorporates risk analysis, prototyping, and iterative cycles.
This document discusses different process models used in software development. It describes the key phases and characteristics of several common process models including waterfall, prototyping, V-model, incremental, iterative, spiral and agile development models. The waterfall model involves sequential phases from requirements to maintenance without iteration. Prototyping allows for user feedback earlier. The V-model adds verification and validation phases. Incremental and iterative models divide the work into smaller chunks to allow for iteration and user feedback throughout development.
The document discusses the spiral model of software development. The spiral model is an iterative approach that combines prototyping and aspects of the waterfall model. It was defined by Barry Boehm in 1988 as a way to address risks through iterative evaluation and improvement of prototypes. The spiral model is best for medium to high risk projects where requirements are complex or expected to change. It involves evaluating prototypes, defining new prototypes based on learnings, and repeating this process until the final product is delivered.
Mostly people ask what is system development life cycle so, you can read the 7 stages of system development life cycle step by step from IPHS Technologies
Testing is the process of identifying bugs and ensuring software meets requirements. It involves executing programs under different conditions to check specification, functionality, and performance. The objectives of testing are to uncover errors, demonstrate requirements are met, and validate quality with minimal cost. Testing follows a life cycle including planning, design, execution, and reporting. Different methodologies like black box and white box testing are used at various levels from unit to system. The overall goal is to perform effective testing to deliver high quality software.
SDLC is the acronym of Software Development Life Cycle. It is also called as Software development process. The software development life cycle (SDLC) is a framework defining tasks performed at each step in the software development process.
The document discusses the software development life cycle (SDLC), including its objectives, main phases, and models. The key phases are requirements analysis, design, coding, testing, and operation/maintenance. Common models include waterfall, prototyping, spiral, and rapid application development (RAD). Waterfall is classical but inflexible, while prototyping allows customer feedback. Spiral reduces risks through iterations. RAD emphasizes reuse and rapid iterations. The conclusion recommends the RAD model for mashup development due to its speed, customer involvement, and support for modularized, multi-platform work.
The document discusses several software development life cycle (SDLC) models, including waterfall, iterative, spiral, V-model, big bang, RAD, and agile. It provides details on the waterfall, iterative, spiral, and V-model approaches, including their applications, advantages, and disadvantages. The waterfall model is described as the classic sequential approach. The iterative model allows for incremental improvements through repeated cycles. The spiral model combines iterative and waterfall elements. The V-model associates testing with each development stage.
1. Software development life cycle models break down the development process into distinct phases to manage complexity. Common models include waterfall, incremental, evolutionary (like prototyping and spiral), and component-based.
2. The waterfall model follows linear sequential phases from requirements to maintenance. Incremental models iterate through phases. Evolutionary models use prototypes to evolve requirements through customer feedback.
3. The spiral model is an evolutionary model representing phases as loops in a spiral, with risk assessment and reduction at each phase. It aims to minimize risk through iterative development and prototyping.
Learn how and what is Spiral Model. This was made during 3RD Year. From Eastern Visayas State University - Main Campus, Tacloban City, Leyte, Philippines
CREATED BY:
Aguilar, Fatima Joy
Arpon, Benedict Julius Steven
Evolutionary process models allow developers to iteratively create increasingly complete versions of software. Examples include the prototyping paradigm, spiral model, and concurrent development model. The prototyping paradigm uses prototypes to elicit requirements from customers. The spiral model couples iterative prototyping with controlled development, dividing the project into framework activities. The concurrent development model concurrently develops components with defined interfaces to enable integration. These evolutionary models allow flexibility and accommodate changes but require strong communication and updated requirements.
The waterfall model is a sequential model for software development where progress flows in one direction like a waterfall from conception to maintenance. It involves 8 phases: definition, design, implementation, testing, integration, deployment, maintenance and support. While it provides structure and is good for stable requirements, it is difficult to change requirements or go back to previous phases and does not allow for much iteration. The waterfall model works best for projects with clearly defined requirements and stable scope, but may not be suitable if requirements are likely to change.
The document discusses the waterfall model of software development. It describes the five phases of the waterfall model as requirements gathering and analysis, design, coding, testing, and maintenance. It provides details on the activities in each phase, including documenting requirements, designing logical modules, writing code, testing software, and maintaining the system. The waterfall model is advantageous for small projects but inflexible if requirements change, as it is a sequential process where each phase must be completed before the next.
Rapid application development (RAD) aims to develop software quickly through a model with phases like business modeling, data modeling, process modeling, application generation, and testing. Business modeling defines information flow. Data modeling refines information into entities and attributes. Process modeling transforms data objects to support business functions. Automated tools help build the software. Testing reduces risk through component reuse and interface exercises. RAD requires tools like case tools, data dictionaries, storyboards, and risk registers. Advantages include quick reviews, isolation of problems, and flexibility, while disadvantages are lack of planning and need for skilled developers.
The iterative model breaks a project into small modules that can be delivered incrementally. A working version is produced in the first module, with each subsequent release adding additional functionality until the full system is complete. It allows for quick releases during development and makes it easier to develop and test in smaller iterations while incorporating customer feedback at each stage. However, it requires more resources than traditional models and skilled management to avoid increased costs over time.
Software development process models
Rapid Application Development (RAD) Model
Evolutionary Process Models
Spiral Model
THE FORMAL METHODS MODEL
Specialized Process Models
The Concurrent Development Model
The incremental model is a software development method where the product is designed, implemented, and tested incrementally in builds until completion. Each module passes through requirements, design, implementation, and testing individually. Subsequent releases of modules add functionality to previous releases until the full system is achieved. The incremental model generates working software early and allows customer feedback at each build. It is also flexible, lowers initial costs, and easier to test and manage risks. However, it requires good upfront planning and design and has a higher total cost than waterfall. The incremental model is well-suited for web applications and when major requirements are defined but details may evolve.
The Waterfall model is a popular sequential model of the software development life cycle where each phase must be completed before the next begins. It consists of requirements, design, implementation, verification, and maintenance phases. Though simple to understand and manage, the Waterfall model works best for smaller, well-defined projects as it is inflexible to changes and produces no working software until late in the cycle.
The document discusses the software development life cycle (SDLC). It describes the typical phases of SDLC including problem definition, program design, coding, debugging, testing, documentation, maintenance, and extension/redesign. It also covers different SDLC models like waterfall, prototyping, and agile development. The SDLC process is best for structured environments while iterative models work better for web and e-commerce projects where frequent stakeholder feedback is needed.
The V-model is a software development lifecycle framework where each phase of development (requirements, design, implementation, testing) has a corresponding testing phase that validates the product. The V-model is best for small to medium projects with clearly defined requirements, and allows testing activities to start early by planning tests before coding begins. Key phases include requirements analysis, system design, module design and coding, unit testing, integration testing, system testing, and user acceptance testing.
This document provides an overview of software maintenance. It discusses that software maintenance is an important phase of the software life cycle that accounts for 40-70% of total costs. Maintenance includes error correction, enhancements, deletions of obsolete capabilities, and optimizations. The document categorizes maintenance into corrective, adaptive, perfective and preventive types. It also discusses the need for maintenance to adapt to changing user requirements and environments. The document describes approaches to software maintenance including program understanding, generating maintenance proposals, accounting for ripple effects, and modified program testing. It discusses challenges like lack of documentation and high staff turnover. The document also introduces concepts of reengineering and reverse engineering to make legacy systems more maintainable.
The document discusses the prototype model in software development. It defines a prototype model as building a working prototype of the system before full development to allow users to evaluate proposals. The key steps are requirements analysis, quick design, building the prototype, getting customer evaluation and feedback, and refining the prototype iteratively until the user is satisfied. Prototype models have advantages like early assessment, clarifying requirements, and ensuring user requirements are met. However, they can also be time-consuming and expensive if multiple prototypes are needed before finding the perfect fit.
Architecture design in software engineeringPreeti Mishra
The document discusses software architectural design. It defines architecture as the structure of a system's components, their relationships, and properties. An architectural design model is transferable across different systems. The architecture enables analysis of design requirements and consideration of alternatives early in development. It represents the system in an intellectually graspable way. Common architectural styles structure systems and their components in different ways, such as data-centered, data flow, and call-and-return styles.
The document discusses several software development life cycle (SDLC) models including Waterfall, V-Shaped, Prototyping, Rapid Application Development (RAD), Incremental, and Spiral models. For each model, it describes the key steps, strengths, weaknesses, and when each model is best applied. The models range from traditional sequential models like Waterfall to more iterative models like Prototyping and RAD.
This Presentation contains all the topics in design concept of software engineering. This is much more helpful in designing new product. You have to consider some of the design concepts that are given in the ppt
The document discusses several software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, incremental, spiral, rapid application development (RAD), dynamic systems development method (DSDM), adaptive software development, and agile methods. It provides an overview of the key characteristics, strengths, weaknesses, and types of projects that each model is best suited for. Tailored SDLC models are recommended to customize processes based on specific project needs and risks.
The document discusses different software development life cycle (SDLC) models including waterfall, spiral/iterative, and agile. It provides an overview of each model's phases and when they are best applied. The waterfall model follows sequential phases from requirements to maintenance. The spiral model is risk-driven and iterative. The agile model emphasizes speed, reduced documentation, and frequent customer feedback through shorter development cycles. SDLC models provide structure, standard processes and deliverables to software development projects.
The document discusses the software development life cycle (SDLC), including its objectives, main phases, and models. The key phases are requirements analysis, design, coding, testing, and operation/maintenance. Common models include waterfall, prototyping, spiral, and rapid application development (RAD). Waterfall is classical but inflexible, while prototyping allows customer feedback. Spiral reduces risks through iterations. RAD emphasizes reuse and rapid iterations. The conclusion recommends the RAD model for mashup development due to its speed, customer involvement, and support for modularized, multi-platform work.
The document discusses several software development life cycle (SDLC) models, including waterfall, iterative, spiral, V-model, big bang, RAD, and agile. It provides details on the waterfall, iterative, spiral, and V-model approaches, including their applications, advantages, and disadvantages. The waterfall model is described as the classic sequential approach. The iterative model allows for incremental improvements through repeated cycles. The spiral model combines iterative and waterfall elements. The V-model associates testing with each development stage.
1. Software development life cycle models break down the development process into distinct phases to manage complexity. Common models include waterfall, incremental, evolutionary (like prototyping and spiral), and component-based.
2. The waterfall model follows linear sequential phases from requirements to maintenance. Incremental models iterate through phases. Evolutionary models use prototypes to evolve requirements through customer feedback.
3. The spiral model is an evolutionary model representing phases as loops in a spiral, with risk assessment and reduction at each phase. It aims to minimize risk through iterative development and prototyping.
Learn how and what is Spiral Model. This was made during 3RD Year. From Eastern Visayas State University - Main Campus, Tacloban City, Leyte, Philippines
CREATED BY:
Aguilar, Fatima Joy
Arpon, Benedict Julius Steven
Evolutionary process models allow developers to iteratively create increasingly complete versions of software. Examples include the prototyping paradigm, spiral model, and concurrent development model. The prototyping paradigm uses prototypes to elicit requirements from customers. The spiral model couples iterative prototyping with controlled development, dividing the project into framework activities. The concurrent development model concurrently develops components with defined interfaces to enable integration. These evolutionary models allow flexibility and accommodate changes but require strong communication and updated requirements.
The waterfall model is a sequential model for software development where progress flows in one direction like a waterfall from conception to maintenance. It involves 8 phases: definition, design, implementation, testing, integration, deployment, maintenance and support. While it provides structure and is good for stable requirements, it is difficult to change requirements or go back to previous phases and does not allow for much iteration. The waterfall model works best for projects with clearly defined requirements and stable scope, but may not be suitable if requirements are likely to change.
The document discusses the waterfall model of software development. It describes the five phases of the waterfall model as requirements gathering and analysis, design, coding, testing, and maintenance. It provides details on the activities in each phase, including documenting requirements, designing logical modules, writing code, testing software, and maintaining the system. The waterfall model is advantageous for small projects but inflexible if requirements change, as it is a sequential process where each phase must be completed before the next.
Rapid application development (RAD) aims to develop software quickly through a model with phases like business modeling, data modeling, process modeling, application generation, and testing. Business modeling defines information flow. Data modeling refines information into entities and attributes. Process modeling transforms data objects to support business functions. Automated tools help build the software. Testing reduces risk through component reuse and interface exercises. RAD requires tools like case tools, data dictionaries, storyboards, and risk registers. Advantages include quick reviews, isolation of problems, and flexibility, while disadvantages are lack of planning and need for skilled developers.
The iterative model breaks a project into small modules that can be delivered incrementally. A working version is produced in the first module, with each subsequent release adding additional functionality until the full system is complete. It allows for quick releases during development and makes it easier to develop and test in smaller iterations while incorporating customer feedback at each stage. However, it requires more resources than traditional models and skilled management to avoid increased costs over time.
Software development process models
Rapid Application Development (RAD) Model
Evolutionary Process Models
Spiral Model
THE FORMAL METHODS MODEL
Specialized Process Models
The Concurrent Development Model
The incremental model is a software development method where the product is designed, implemented, and tested incrementally in builds until completion. Each module passes through requirements, design, implementation, and testing individually. Subsequent releases of modules add functionality to previous releases until the full system is achieved. The incremental model generates working software early and allows customer feedback at each build. It is also flexible, lowers initial costs, and easier to test and manage risks. However, it requires good upfront planning and design and has a higher total cost than waterfall. The incremental model is well-suited for web applications and when major requirements are defined but details may evolve.
The Waterfall model is a popular sequential model of the software development life cycle where each phase must be completed before the next begins. It consists of requirements, design, implementation, verification, and maintenance phases. Though simple to understand and manage, the Waterfall model works best for smaller, well-defined projects as it is inflexible to changes and produces no working software until late in the cycle.
The document discusses the software development life cycle (SDLC). It describes the typical phases of SDLC including problem definition, program design, coding, debugging, testing, documentation, maintenance, and extension/redesign. It also covers different SDLC models like waterfall, prototyping, and agile development. The SDLC process is best for structured environments while iterative models work better for web and e-commerce projects where frequent stakeholder feedback is needed.
The V-model is a software development lifecycle framework where each phase of development (requirements, design, implementation, testing) has a corresponding testing phase that validates the product. The V-model is best for small to medium projects with clearly defined requirements, and allows testing activities to start early by planning tests before coding begins. Key phases include requirements analysis, system design, module design and coding, unit testing, integration testing, system testing, and user acceptance testing.
This document provides an overview of software maintenance. It discusses that software maintenance is an important phase of the software life cycle that accounts for 40-70% of total costs. Maintenance includes error correction, enhancements, deletions of obsolete capabilities, and optimizations. The document categorizes maintenance into corrective, adaptive, perfective and preventive types. It also discusses the need for maintenance to adapt to changing user requirements and environments. The document describes approaches to software maintenance including program understanding, generating maintenance proposals, accounting for ripple effects, and modified program testing. It discusses challenges like lack of documentation and high staff turnover. The document also introduces concepts of reengineering and reverse engineering to make legacy systems more maintainable.
The document discusses the prototype model in software development. It defines a prototype model as building a working prototype of the system before full development to allow users to evaluate proposals. The key steps are requirements analysis, quick design, building the prototype, getting customer evaluation and feedback, and refining the prototype iteratively until the user is satisfied. Prototype models have advantages like early assessment, clarifying requirements, and ensuring user requirements are met. However, they can also be time-consuming and expensive if multiple prototypes are needed before finding the perfect fit.
Architecture design in software engineeringPreeti Mishra
The document discusses software architectural design. It defines architecture as the structure of a system's components, their relationships, and properties. An architectural design model is transferable across different systems. The architecture enables analysis of design requirements and consideration of alternatives early in development. It represents the system in an intellectually graspable way. Common architectural styles structure systems and their components in different ways, such as data-centered, data flow, and call-and-return styles.
The document discusses several software development life cycle (SDLC) models including Waterfall, V-Shaped, Prototyping, Rapid Application Development (RAD), Incremental, and Spiral models. For each model, it describes the key steps, strengths, weaknesses, and when each model is best applied. The models range from traditional sequential models like Waterfall to more iterative models like Prototyping and RAD.
This Presentation contains all the topics in design concept of software engineering. This is much more helpful in designing new product. You have to consider some of the design concepts that are given in the ppt
The document discusses several software development life cycle (SDLC) models including waterfall, V-shaped, prototyping, incremental, spiral, rapid application development (RAD), dynamic systems development method (DSDM), adaptive software development, and agile methods. It provides an overview of the key characteristics, strengths, weaknesses, and types of projects that each model is best suited for. Tailored SDLC models are recommended to customize processes based on specific project needs and risks.
The document discusses different software development life cycle (SDLC) models including waterfall, spiral/iterative, and agile. It provides an overview of each model's phases and when they are best applied. The waterfall model follows sequential phases from requirements to maintenance. The spiral model is risk-driven and iterative. The agile model emphasizes speed, reduced documentation, and frequent customer feedback through shorter development cycles. SDLC models provide structure, standard processes and deliverables to software development projects.
The second part of SDLC talks about various types of life cycles - Waterfall, Prototype, Spiral, V Model and Incremental. Special focus provided for Agile. Good number of case studies are provided to understand which life cycle to choose during what type of project. The slide deck concludes with detailed description of Requirement Engineering and Sytem modelling.
The document discusses the system development life cycle (SDLC) as a systematic method for organizations to implement change through new technologies. It describes the four phases of SDLC - planning, analysis, design, and implementation. The planning phase involves feasibility studies to understand economic, organizational, and technical factors. The analysis phase breaks down the problem and gathers stakeholder requirements. The design phase decides if the system will be internal or outsourced. The implementation phase builds, tests, trains users on, and evaluates the new system. SDLC provides a systematic strategy for large development projects involving many stakeholders.
This document discusses system design and prototyping. It covers functional and architectural design, prototyping, advantages and disadvantages of prototyping, and when to use a prototype model. Prototyping involves building a throwaway prototype based on initial requirements to help clients better understand the system. Prototypes allow for early detection of errors and user feedback to refine requirements and solutions before full development. Prototyping is best for systems with significant user interaction where requirements may be unclear.
This document discusses various software development life cycle (SDLC) models including waterfall, iterative waterfall, rapid prototype, evolutionary, spiral, fish, V-shape, RAD, and incremental models. For each model, it provides a brief description and highlights the advantages and disadvantages. The models differ in their structure, approach to requirements, testing, flexibility, and ability to handle risk and changing requirements.
perfect for college presentation to speak about the prototype model for 5 minutes or can be extended according to the explanation given by the student or presenter about the diagram that shows the phases,
This presentation slide is purposely for our Software Quality course. You will notice less words, as we had been given only 10 minutes to present. All information is taken through our research on internet. Thanks to all worldwide SE Experts for your valuable knowledge.
The document discusses the software development life cycle (SDLC) and its various stages and models. It provides definitions of key SDLC terms like waterfall model, verification and validation testing, integration testing, and system testing. It also describes different testing types like unit testing, component testing, and acceptance testing that occur at different stages of the SDLC.
The systems development life cycle (SDLC), also referred to as the application development life-cycle, is a term used in systems engineering, information systems and software engineering to describe a process for planning, creating, testing, and deploying an information system.
1. System Analyst Work as A
2. Qualities of the system Analyst
3. System Development Life Cycle
4. Identifying Problems, Opportunities and objectives
5. Determining Human Information Requirements
6. Analyzing System Needs
7. Designing the recommended System
8. Testing and Maintaining the system
9. Implementing and Evaluating
The document discusses the System Development Life Cycle (SDLC), which is a standard model used worldwide to develop software. It describes the main stages of the SDLC as analysis, planning, implementation, and testing. Analysis is the first and most important phase where requirements are determined and the problem is broken down. Planning involves assigning tasks to team members. Implementation is the longest and most expensive phase. Testing is an ongoing phase where thorough testing takes place. The document also discusses various SDLC models including waterfall, iterative enhancement, prototyping, spiral, build and fix, and rapid application development models.
Value of PMP Certification and PMI MembershipRahul Sudame
This document provides an overview of the benefits of membership in the Project Management Institute (PMI) and its local Pune-Deccan India chapter. Key benefits include access to publications, online resources, professional development opportunities, discounts, and volunteer leadership roles. Certification and adherence to global standards help practitioners establish competency and a common vocabulary.
The document discusses the roles and responsibilities of a systems analyst. It provides definitions for common types of systems such as transaction processing systems, decision support systems, and expert systems. It also outlines the roles of a systems analyst, which include serving as an outside consultant, as an internal support expert, and as an agent of change within an organization. The document emphasizes that systems analysts must have strong problem solving, communication, and technical skills to understand user needs and facilitate the implementation of new information systems.
The document discusses the system development life cycle (SDLC), which includes 5 phases - planning, analysis, design, implementation, and support. In the planning phase, project requests are reviewed and resources are allocated. The analysis phase involves preliminary investigation and detailed analysis of user requirements. The design phase includes acquiring hardware/software and developing system details. In implementation, the new system is installed, tested, and users are trained. The support phase provides ongoing assistance after deployment.
The document discusses the Agile development model. It defines Agile as an incremental model where each release is tested to ensure software quality. It notes that Agile is used for time critical applications and when new changes are needed. The advantages of Agile include customer satisfaction, frequent delivery of working software, and responsiveness to change. However, disadvantages include lack of documentation and potential loss of focus without a clear customer representative.
System development life cycle-Naveen vijayNaveen Vijay
The document discusses the system development life cycle (SDLC) which includes 5 phases - planning, analysis, design, implementation, and support. The analysis phase involves conducting a preliminary investigation to determine requirements, then performing detailed analysis activities like studying current systems and determining user needs to recommend a solution. Key aspects of the analysis phase include fact finding, feasibility analysis, and creating system flow charts and diagrams.
This document discusses and compares different software lifecycle models: Waterfall, Prototype, Spiral, and Agile. The Waterfall model is sequential with clear phases but inflexible. The Prototype model allows for early feedback but suffers from poor documentation. The Spiral model combines design and prototyping. Finally, the Agile model is iterative and test-driven but may increase complexity.
The document provides an overview of several software development life cycle (SDLC) models: Waterfall, Spiral, Agile, and Prototyping. It describes the key stages and processes of each model, when each is best applied, and their advantages and disadvantages. The Waterfall model is linear and sequential, while Spiral and Agile models are iterative with incremental improvements and flexibility. Prototyping focuses on early user involvement through prototypes to refine requirements.
Structured analysis and structured designSudeep Singh
Structured Analysis and Structured Design (SASD) is a software development process that uses graphical tools and techniques to develop system specifications. It was developed in the 1970s and aims to improve quality, establish requirements, and focus on reliability. SASD models a system's essential functions, environment, behavior, and implementation through tools like data flow diagrams and entity relationship diagrams. It provides thorough documentation and is well-suited for real-time systems.
The document discusses the Software Development Life Cycle (SDLC) which is a methodology for developing high quality software through defined processes and phases. It describes the typical phases of SDLC as requirement analysis and planning, defining requirements, software design, development, testing, and deployment. Popular SDLC models include waterfall, iterative, spiral, incremental, and prototype models. Each phase and model is then explained in more detail over the course of the document.
This is about software engineering.Software engineers apply engineering principles and knowledge of programming languages to build software solutions for end users. Software engineers design and develop computer games, business applications, operating systems, network control systems, and middleware—to name just a few of the many career paths available.
This document discusses the waterfall model of the software development life cycle (SDLC). It describes the key phases of the waterfall model as requirements, design, implementation, integration and testing, verification, deployment, and maintenance. Each phase must be completed before moving to the next in a linear fashion. The waterfall model provides structure, sets requirements stability, and is good for management control. However, it requires all requirements to be known upfront and doesn't allow for much flexibility or customer feedback during development. The waterfall model is best suited when requirements are well defined and the technology is understood.
This document discusses various topics related to event management and software development. It covers the software development life cycle (SDLC) including both traditional and agile models. It discusses requirements, databases, modeling languages, internet of things, Java features, Android development, HTTP, and .NET. The key topics covered are SDLC methodologies (waterfall, agile), database concepts (OLTP, OLAP, queries), modeling tools (UML, StarUML, Umlet), sensors and devices for IoT projects, programming languages (Java, features; Android architecture), web protocols (HTTP, client-server), and development platforms (.NET languages, libraries).
The Software Development Life Cycle (SDLC) is a methodology or framework used in project management to guide the stages involved in developing an information system or software application. It encompasses the entire process from the initial feasibility study to the maintenance of the completed application.
The document discusses different software process models used in software development. It describes the waterfall model as a linear sequential process moving from requirements to design to development and so on. The iterative model develops software incrementally in iterations to add more features. The V model maps each development phase to a testing phase. Other models discussed include RAD, spiral and agile models.
The document discusses various software development process models. It describes the waterfall model, which involves sequential phases from requirements to maintenance. The main drawback is difficulty accommodating changes after a phase is complete. The document also covers prototyping, rapid application development (RAD), incremental development, and spiral development - all of which allow for more iterative processes and incorporating feedback.
REPORT IN SYSTEM INTEGRATION AND ARCHITECTURE.pptxESAChannel
The term "Software Development Life Cycle" (SDLC) refers to a methodology for producing high-quality software that includes well-defined processes. The phases of software development that the SDLC approach focuses on in depth are as follows:
Comparing Various SDLC Models On The Basis Of Available MethodologyIJMER
There are various SDLC models widely accepted and employed for developing software.
SDLC models give a theoretical guide line regarding development of the software. Employing proper
SDLC allows the managers to regulate whole development strategy of the software. Each SDLC has its
advantages and disadvantages making it suitable for use under specific condition and constraints for
specified type of software only. We need to understand which SDLC would generate most successful
result when employed for software development. For this we need some method to compare SDLC
models. Various methods have been suggested which allows comparing SDLC models. Comparing SLDC
models is a complex task as there is no mathematical theorem or physical device available. The essence
of this paper is to analyse some methodologies that could result in successful comparison of the SDLC
models. For this we have studied various available tools, techniques and methodologies and have tried
to extract most simple, easy and highly understandable method for comparing SDLC models.
The document discusses different software development life cycle models and their implications for testing. It describes the waterfall model, V-model, iterative models like RAD and XP. The V-model uses four test levels - component, integration, system and acceptance testing. Iterative models divide delivery into increments with testing at each stage. Whichever model is used, testing activities correspond to development activities and testers are involved from the start.
The document discusses different software development life cycle (SDLC) models. It defines SDLC as a process used by the software industry to design, implement, and test high-quality software. The main stages of SDLC are planning, analysis, design, coding/development, testing, and deployment. It then describes six common SDLC methodologies - waterfall, V-shaped, iterative, spiral, big bang, and agile - and explains when each is generally most appropriate to use.
The document describes various software development life cycle (SDLC) models. It discusses the waterfall model, iterative model, spiral model, V-model, and big bang model. For each model, it provides an overview of the design, typical application scenarios, and pros and cons. The key stages of the waterfall model are outlined in detail, including planning, requirements, design, implementation, testing, deployment, and maintenance.
The document provides a complete interview preparation guide for software quality assurance engineers seeking both manual and automation roles. It covers fundamental SQA topics like the SDLC, testing documents, testing methods and techniques. It also includes chapters on agile methodology, database concepts, API testing, Selenium automation, JMeter load testing, and aptitude questions. The guide is intended to be a comprehensive reference that candidates can print and refer to while learning and practicing technical skills.
The document describes 18 different software development models including the Waterfall, Incremental, Spiral, Concurrent, Component-Based, Formal Method, Aspect Oriented, Unified Process models. For each model there is a brief introduction describing the key aspects of the model, a diagram illustrating it, advantages and disadvantages, best uses, and similar models. The models range from traditional sequential to more modern iterative and agile approaches.
The document discusses several software development models including the waterfall model, V-model, iterative models, Rapid Application Development (RAD) model, and Agile development models like Extreme Programming (XP). The V-model uses four test levels - component, integration, system, and acceptance testing. Iterative models deliver functionality in increments with each increment tested at several levels. RAD encourages active customer feedback for early visibility and decisions about future development. Agile models like XP promote generating stories to define functionality and on-site customers for continual feedback.
The document provides an overview of the Software Development Life Cycle (SDLC) including its various stages and models. The key points are:
1. SDLC is a process that consists of planning, analysis, design, implementation, testing, deployment, and maintenance phases to develop and maintain software.
2. The stages include planning, requirements analysis, design, development, testing, deployment, and maintenance.
3. Common models include waterfall, iterative, spiral, V-model, and agile. Waterfall is the earliest and most basic sequential model while iterative and agile are more flexible to changing requirements.
The document discusses software development life cycles (SDLC). It describes the typical stages of an SDLC including feasibility study, requirements analysis, system design, development, testing, implementation, and maintenance. Several SDLC models are mentioned, including waterfall, spiral, iterative, prototyping, and RAD (rapid application development). The waterfall model is described as having distinct sequential stages with no overlap between phases. Prototyping and RAD methodologies are also explained in further detail.
The document discusses the software development life cycle (SDLC), outlining its key phases: problem definition, program design, coding, debugging, testing, documentation, maintenance, and extension/redesign. It also covers different SDLC models like waterfall and agile, noting strengths like structure but weaknesses like lack of iteration. The conclusion reinforces that the SDLC aims to develop high-quality, on-time and on-budget systems that are inexpensive to maintain.
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1. SHRI RAM MURTI SMARAK COLLEGE OF ENGINEERING
& TECHNOLOGY, BAREILLY (UTTAR PRADESH)
Research Paper Presentation
on
Software Development Life Cycle(SDLC)
Presented By:
Akash Gupta
Rupali Bhojpuria
Shobhana Singh
2. INTRODUCTION TO SDLC
SDLC Stands for Software Development Life Cycle.
The software development life cycle (SDLC) is
a framework defining tasks performed at each step in
the software development process.
It consists of a detailed plan describing how
to develop, maintain and replace specific software.
3. OBJECTIVE OF SDLC
SDLC has Three primary objectives:
Ensure the delivery of high quality systems.
Provide strong management control.
Maximize productivity.
5. Phase 1: Planning
Determine if a new system is needed
Three primary tasks:
Define the problem.
Suggest alternative solutions.
Prepare a short report.
6. Phase 2: System Analysis
In depth study of the existing system to
determine what the new system should do.
In addition to observation and interviews,
examine:
Formal lines of authority (org chart)
Standard operating procedures
How information flows
Reasons for any inefficiencies
7. Phase 3: System Design
It takes the initial input
For each requirements design elements will be
produced
It describes the software features and includes
hierarchy diagrams , screen layout diagrams
The output of the stage describe the new
system as a collection of modules or
subsystems.
8. Phase 4: System Development
Build the system to the design specifications
Develop the software
Acquire the hardware
Create manuals for users and operators
9. PHASE 5: SYSTEM TESTING
Test the new system
Module (unit) test - tests each part of
system
Integration testing - tests system as one
unit
10. Phase 6: System Implementation
Convert from old system to new system.
Train users
Compile final documentation
Evaluate the new system
User Training
11. Phase 7: System Maintenance
Physical repair of the system.
Correction of new bugs found.
System adjustments to environmental changes.
Adjustments for users’ changing needs
(adaptive).
Changes to user better techniques when they
become available (perfective).
12. SDLC MODELS
A framework that describes the activities performed at
each stage of a software development project.
Waterfall model
Iterative model
Prototyping model
Spiral Model
V model
13. WATERFALLMODEL
TheWaterfall Model was first Process Model to be introduced. It is also
Referred to as a linear-sequential life cycle model .
14. Strengths of Waterfall model
Strengths
Structure minimizes wasted effort.
Works well for technically weak or in
experienced staff.
Minimizes planning overhead.
Weakness
Inflexible
Only final stage produces documentation.
Backing up to address mistake is difficult.
15. Iterative Model
In Iterative model ,iterative process start with a simple implementation
Of a small set of the software requirements and iteratively enhances
the Evolving version until the complete system is implemented and
ready to be deployed
16. Strengths of Iterative model
Results are obtained early and periodically.
Parallel development can be planned.
Progress can be measured.
Less costly to change the scope/requirements.
Testing and debugging during smaller iteration is
easy.
17. WEAKNESS OF ITERATIVE MODEL
More resources may be required.
Although cost of change is lesser but it is not
very suitable for changing requirements.
More management attention is required.
System architecture or design issues may arise
because not all requirements are gathered in the
beginning of the entire life cycle.
Defining increments may require definition of
the complete system.
19. Strengths& weakness of Prototyping model
Strengths
Customers can see steady progress.
This is useful when requirements are changing
rapidly.
Weakness
It is impossible to know how long it will take.
There is no way to know the no of iterations
will be required.
20. Spiral Model
The Spiral model combines the idea of iterative development
With the systematic , controlled aspects of the waterfall model.
21. Strengths &Weakness of Spiral model
Strength
Early iterations of the project are cheapest
Risk decreases.
All iterations meets the project needs
Weakness
Complicated
Require attentive & knowledgeable
management
22. V- Model
The V-model is SDLC model where execution of processes happens in a
sequential manner in V-shape. It is also known as Verification and Validation
model.
23. Strengths of V model
Emphasize planning for verification and validation
of the product in early stages of product development
Each deliverable must be testable
Project management can track progress by
milestones
Easy to use
24. WEAKNESS OF V MODEL
Does not easily handle concurrent events
Does not handle iterations or phases
Does not easily handle dynamic changes in
requirements
Does not contain risk analysis activities
25. SOFTWARE DEVELOPMENT LIFE CYCLE:
THE ROLE OF TESTING
Software development life cycle (SDLC) is an integral
part of any software application development. Testing
has a lot of influence in SDLC.
In every company, testing is the most vital and precious
stage in the software development life cycle. But, the
technique by which it is performed, dissimilar from one
company to another company.
26. SDLC TESTING PHASE
The SDLC Testing phase is notionally designed to be
carried out after system development is complete.
With the help of different type of testing (e.g. assimilation tests,
element testing, user recognition testing system testing and
regression tests etc.) coder may produce a consistent and
reliable application. Testing also includes some process e.g. test
analysis, test plan, test design and test execution.
.
27. WHAT IS THE SDLC TESTING LIFE CYCLE?
SDLC Test Analysis Phase
SDLC Test Design Phase
SDLC Test Execution Phase
28. MOST IMPORTANCE OF TESTING IN SDLC
Recognition of Error and Faults
Resolves the errors and faults in the software application. These
errors may be in unit level or in system level.
Statistics to Shareholders and Status of Organization
Helps to know the condition of product and work standards.
Enhancement in Product Standards
Helps to know the real result and the probable result. It also helps to
pick up the standards of the software.
Technical Significance
Significant for technical characteristics of any SDLC as the software.
Free from any Risk
Free everyone from any risk.
29. CONTD…
Confirmation and Corroboration
Compare among standards of several software application.
Demonstrate Accessibility and Feasibility
Application is delivering to a select assembly of users and their
functioning with the application is noticed.
Avoid fault immigration
Prohibited all faults from immigrating to the following
progress stage.
30. WHATARE THE TYPES OF SDLC TESTING?
Acceptance Testing –
Alpha Testing –
Beta Testing –
Functional Testing –
Independent Verification and Validation –
Load Testing –
Security Testing –
31. SECURITY IN SDLC
Integrating security into the SDLC is essential for
developing quality software. While there are no standard
practices, these guidelines can help you develop a
custom process for a secure software development life
cycle.
Each phase of the SDLC is mapped with security
activities
Requirements Gathering
Security Requirements
Determine security needs
Determine privacy needs
32. Design
• Identify Design Requirements from security
perspective
• Architecture & Design Reviews
• Threat Modeling
Coding
• Coding Best Practices
• Perform Static Analysis
Testing
• Run security test cases
• Perform dynamic analysis
33. Deployment
• Server Configuration Review
• Network Configuration Review
Maintenance
• Continually monitor application security and update
as needed
• Utilize response plan as needed
34. SECURITY-ENHANCING LIFECYCLE
PROCESS MODELS
Enhance security through a repeatable and measurable
process
Provide guidance on secure software activities
Provide secure software development reviews
Include tactical resources
Provision the use of automation tools
Suggest roles for conducting the activities
Integrate with foundational software development
activities
35. FREE FLOW MODEL
In the framework of Free Flow the development process
of a software is augmented at every stage by incorporating
different matrices and allowing free flow of control in the
software development hierarchy in order to save time in
situations where the testing team need to interact with the
another team.
37. FREE-FLOW SDLC FEATURES
Requirement Capture
Prototype and High Level Diagrams
Module releases
–
Check-List Method
Well-Defined Architecture
Task and bug tracking system
38. CONCLUSION
There are many SDLC models such as, Waterfall, spiral,
iterative, V-shaped etc. used in various organizations depending
upon the conditions prevailing there
In this paper we have compared the different software
development life cycle models on the basis of certain features
like- Requirement, specifications, Risk involvement, User
involvement, Cost etc.
On the basis of these features for a particular software project
one can decide which of these software development life cycle
models should be chosen for that particular project. Selecting the
correct life cycle model is extremely important in a software
industry as the software has to be delivered within the time
deadline & should also have the desired quality.
39. FUTURE WORK
The new proposed framework is a Comparative
Analysis of Free Flow software methodology
with different SDLC model.
Free-Flow Model eliminates the risks and errors
in early stages through pipelined flow of processes
and control more than other SDLC model.
Number of matrices added to make the system
robust and increase its efficiency.
40. REFERENCE
WWW.GOOGLE.COM .
www.encyclopedia.com
www.yahoo.com
Software Engineering Book –
K. K. Aggarwal, Yogesh Singh Software Engineering 3rd
Edition.
Research guide.
Sanjana Taya “Comparative Analysis of Software
Development Life” .
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