The document discusses the Software Development Life Cycle (SDLC), outlining its main phases: planning, requirements analysis, feasibility study, system design, development/coding, system testing, implementation, and maintenance. It provides details on each phase, explaining their key activities and purposes. The SDLC is presented as a process used by systems analysts to develop information systems according to requirements, while ensuring quality, on-time and on-budget completion, effective performance, and cost-efficient maintenance.
This document discusses software engineering and quality assurance. It begins by outlining the uniqueness of software quality assurance and the different environments for which SQA methods are developed.
It then provides an example of a failed software implementation at the Denver International Airport in 1995. The new airport's opening was delayed by 16 months due to failures in their software-based baggage handling system, costing $2 billion.
The document identifies three main differences between ensuring quality in software products versus other industrial products: 1) Software is usually more complex with more operational modes; 2) Software is invisible so defects are not easily detectable; 3) Opportunities to detect defects in software are limited to the development phase, unlike other products which have
This document discusses software engineering traceability. It defines traceability and requirements traceability. Traceability allows tracking forward and backward from requirements to system features and permits verification that requirements have been implemented. Maintaining traceability provides benefits like change impact analysis, project tracking, testing and reuse. International standards like ISO 29110 and CMMI level 2 require processes for requirements traceability.
This presentation provides an overview of the system development life cycle (SDLC) in 3 sentences:
It outlines the 8 phases of the SDLC: study of the problem, making a plan, system analysis, system design, program development, program testing, system implementation, and maintenance. Each phase is described in detail, from understanding the problem and feasibility analysis to designing, programming, testing, implementing the system, and ongoing maintenance. The presentation aims to explain the full process of developing a system from start to finish through the SDLC phases.
The V-model is a type of software development lifecycle model where the development process executes in sequential phases shaped like a V. It emphasizes verification and validation activities that are planned and executed at each development stage. The key phases include requirement analysis, system design, module design, unit testing, integration testing, system testing, and user acceptance testing. The V-model has advantages like discipline, clarity for smaller projects, and early validation. However, it also has disadvantages like high risk, unsuitability for complex or changing projects, and lack of iteration or concurrency.
This document discusses software project scheduling. It explains that project scheduling involves identifying tasks, determining dependencies between tasks, estimating task durations, allocating resources, and determining start and end dates. The critical path is the sequence of tasks that determines the project duration. The document also discusses software prototyping, which involves creating initial prototypes, reviewing them, and revising them based on feedback, to help define requirements before full development. Common prototyping methods include incremental, throwaway, extreme, and evolutionary prototyping.
Software testing and introduction to qualityDhanashriAmbre
The document provides an overview of software testing and quality assurance. It defines software testing as a process to investigate quality and find defects between expected and actual results. Testing is necessary to ensure software is defect-free per customer specifications and increases reliability. The document then discusses types of errors like ambiguous specifications, misunderstood specifications, and logic/coding errors. It outlines the software development life cycle including phases like planning, analysis, design, coding, testing, implementation, and maintenance. Each phase is described in 1-2 sentences.
The document discusses the Standard CMMI Appraisal Method for Process Improvement (SCAMPI). SCAMPI is designed to provide benchmark quality ratings relative to the Capability Maturity Model Integration (CMMI) and satisfies requirements for a Class A appraisal method. The document provides examples of using SCAMPI to conduct appraisals at Maturity Level 2, including rating process attributes, examples assessing process areas, and scoring. Key practices and artifacts considered for requirements management are also outlined.
This document discusses software engineering and quality assurance. It begins by outlining the uniqueness of software quality assurance and the different environments for which SQA methods are developed.
It then provides an example of a failed software implementation at the Denver International Airport in 1995. The new airport's opening was delayed by 16 months due to failures in their software-based baggage handling system, costing $2 billion.
The document identifies three main differences between ensuring quality in software products versus other industrial products: 1) Software is usually more complex with more operational modes; 2) Software is invisible so defects are not easily detectable; 3) Opportunities to detect defects in software are limited to the development phase, unlike other products which have
This document discusses software engineering traceability. It defines traceability and requirements traceability. Traceability allows tracking forward and backward from requirements to system features and permits verification that requirements have been implemented. Maintaining traceability provides benefits like change impact analysis, project tracking, testing and reuse. International standards like ISO 29110 and CMMI level 2 require processes for requirements traceability.
This presentation provides an overview of the system development life cycle (SDLC) in 3 sentences:
It outlines the 8 phases of the SDLC: study of the problem, making a plan, system analysis, system design, program development, program testing, system implementation, and maintenance. Each phase is described in detail, from understanding the problem and feasibility analysis to designing, programming, testing, implementing the system, and ongoing maintenance. The presentation aims to explain the full process of developing a system from start to finish through the SDLC phases.
The V-model is a type of software development lifecycle model where the development process executes in sequential phases shaped like a V. It emphasizes verification and validation activities that are planned and executed at each development stage. The key phases include requirement analysis, system design, module design, unit testing, integration testing, system testing, and user acceptance testing. The V-model has advantages like discipline, clarity for smaller projects, and early validation. However, it also has disadvantages like high risk, unsuitability for complex or changing projects, and lack of iteration or concurrency.
This document discusses software project scheduling. It explains that project scheduling involves identifying tasks, determining dependencies between tasks, estimating task durations, allocating resources, and determining start and end dates. The critical path is the sequence of tasks that determines the project duration. The document also discusses software prototyping, which involves creating initial prototypes, reviewing them, and revising them based on feedback, to help define requirements before full development. Common prototyping methods include incremental, throwaway, extreme, and evolutionary prototyping.
Software testing and introduction to qualityDhanashriAmbre
The document provides an overview of software testing and quality assurance. It defines software testing as a process to investigate quality and find defects between expected and actual results. Testing is necessary to ensure software is defect-free per customer specifications and increases reliability. The document then discusses types of errors like ambiguous specifications, misunderstood specifications, and logic/coding errors. It outlines the software development life cycle including phases like planning, analysis, design, coding, testing, implementation, and maintenance. Each phase is described in 1-2 sentences.
The document discusses the Standard CMMI Appraisal Method for Process Improvement (SCAMPI). SCAMPI is designed to provide benchmark quality ratings relative to the Capability Maturity Model Integration (CMMI) and satisfies requirements for a Class A appraisal method. The document provides examples of using SCAMPI to conduct appraisals at Maturity Level 2, including rating process attributes, examples assessing process areas, and scoring. Key practices and artifacts considered for requirements management are also outlined.
System Development Life Cycle & Implementation of MISGeorge V James
The document discusses the system development life cycle (SDLC) and implementation of management information systems (MIS). It describes the six main stages of the SDLC as investigation, analysis, design, development, implementation, and maintenance. For MIS implementation, it lists four methods: installing a new system, cutting over from an old system, cutting over in segments, or operating systems in parallel before cutting over. It then provides 14 steps for MIS implementation, including planning, acquiring hardware/software, testing, training users, and providing ongoing system maintenance.
Spm unit iii-configuration mgmt-responsibilitiesKanchana Devi
The document discusses various aspects of configuration management including:
1) Baselines provide an official standard for work and record authorized changes until the next baseline.
2) Responsibilities for configuration management include the configuration manager, module owners, and change control board who review proposed changes.
3) Prototypes are incomplete versions of software that can be horizontal to demonstrate scope or vertical to refine specific functions. They can help reduce time and costs but also risks like user confusion.
This document discusses software maintenance and metrics used to measure software complexity. It notes that maintenance makes up 70% of a software's lifecycle costs. Common maintenance activities include enhancements, adaptations, and corrections. Two important source code metrics discussed are Halstead's effort equation and McCabe's cyclomatic complexity, which measure properties of source code like tokens and control flow to evaluate complexity. Maintaining complexity metrics is important during software evolution and maintenance.
Ch 7 integrating quality activities in the projectlife cycleKittitouch Suteeca
The document describes Kittitouch S.'s software engineering course covering various topics:
- Software development methodologies like waterfall, prototyping, spiral, and object-oriented models.
- Factors affecting quality assurance activities and models for quality assurance planning.
- Key software engineering concepts like verification, validation, and qualification.
- A model for evaluating the effectiveness and costs of software quality assurance plans and defect removal activities.
The document includes three revisions by Kittitouch between January and May 2012 with added topics in each revision.
The document discusses the Software Testing Life Cycle (STLC) and compares it to the Software Development Life Cycle (SDLC). It outlines the key phases of the STLC including test planning, test environment setup, test case creation and execution, bug reporting, analysis and fixing. Validation ensures the product meets requirements while verification checks if it is built correctly. Common verification techniques discussed are reviews, inspections, walkthroughs, and testing approaches like unit testing, integration testing, system testing. The V-model is also summarized which involves creating test plans and documents at each stage to test the product as it is developed.
The system development life cycle is a framework consisting of several stages used to develop information systems and software. It includes requirements analysis, design, implementation, and post-implementation maintenance. The key stages are system analysis and design. The stages include recognition of needs, feasibility study, analysis, design, implementation, and post-implementation maintenance. Each stage addresses important questions and lays the foundation for successful completion of subsequent stages.
The System Development Life Cycle (SDLC) describes the stages of a software development project. It involves planning, analysis, design, implementation, testing, and maintenance. In the analysis stage, tools like interviews and documentation are used to understand business needs. The design stage separates logical design, which specifies user needs, from physical design, which specifies how the system will function. Testing occurs at the unit, integration, and system levels to ensure quality before implementation. Post-implementation review evaluates whether the new system meets requirements.
Testing is the process of executing a program to find errors prior to delivery. There are various types of testing including unit, integration, system, and validation testing which help verify requirements are met and defects are discovered. The goal is to have confidence that the system is fit for purpose and meets user expectations depending on how critical the software is and the marketing environment.
The document discusses software engineering processes and provides an overview of key concepts:
1) It describes a process framework that includes core framework activities like requirements analysis, design, coding, and testing, as well as umbrella activities like project management and quality assurance.
2) Process models need to be adaptable to different project types and characteristics. The CMMI model defines goals and practices for process areas.
3) Process patterns provide templates for typical process elements like requirements gathering.
4) Processes should be assessed against criteria to ensure success, with options like CMMI, SPICE, and ISO 9001. Assessment drives process improvement.
5) Individual processes like PSP and TSP emphasize
This document discusses various software testing strategies, including integration testing, validation testing, and system testing. Integration testing involves constructing the program structure while testing for errors in interfacing between components. Validation testing occurs after integration is complete and involves testing the fully assembled package. System testing exercises the entire computer-based system and includes recovery testing, security testing, stress testing, performance testing, and deployment testing.
This document discusses building a software testing environment. It emphasizes that senior management is responsible for creating an environment conducive to effective and efficient testing. This involves addressing topics like management's risk appetite, the role of testing, testing policies, support provided, and resources allocated. It also discusses developing a testing strategy that identifies test factors and phases to reduce risks. The strategy is represented as a test factor/test phase matrix that maps risks to development phases. Overall, the document provides guidance on how management can support testing and stresses the importance of a structured, risk-based approach.
This document discusses configuration management in software engineering. It introduces configuration management as a fundamental activity needed to manage changes to requirements, design, and code. Effective configuration management provides control over a software project using techniques like configuration control, revisions, derivations, versions, deltas, and conditional code. It helps coordinate work among team members and reduces problems caused by simultaneous updates, shared code, and different versions.
A quality management system (QMS) is a formalized system that documents processes, procedures, and responsibilities for achieving quality policies and objectives. It involves three main activities: quality assurance which develops organizational standards, quality planning which selects and modifies standards for specific projects, and quality control which ensures best practices are followed to produce quality products.
This model classifies 11 software quality factors into three categories: product operation factors like correctness and reliability, product revision factors like maintainability and testability, and product transition factors like portability and reusability. These factors determine requirements for the software system's output, failure rate, efficiency, security, usability, and adaptability.
Systems Development Lifecycle Walkthrough (Cambridge Technical Level 3 IT)LucySim1
Describing each of the stages of a systems development lifecycle including different examples and comparisons. This was produced for Unit 11 Cambridge Technical Level 3 IT.
The document provides an overview of software cost estimation, outlining various methods used including algorithmic models like COCOMO, expert judgement, top-down and bottom-up approaches, and estimation by analogy. It discusses COCOMO in detail, including the original COCOMO 81 model and updated COCOMO II model, and emphasizes the importance of calibration for accurate estimates.
The document discusses the system development life cycle (SDLC) process. It describes the main steps in SDLC as feasibility study, system analysis, system design, development, testing, implementation, and maintenance. Each step is then further explained. For example, feasibility study involves technical, economic, and operational feasibility analysis. System analysis involves requirements gathering and documentation. The document also briefly introduces some common SDLC models like waterfall, iterative, and spiral models.
This document discusses software testing strategies. It begins by defining software testing as executing a software system to find errors prior to delivery. It then outlines different testing approaches including unit testing, integration testing, validation testing, and system testing. Unit testing focuses on exercising individual software components to detect errors. The document emphasizes that developers and independent test groups must work together throughout a project to ensure thorough testing. It provides examples of what unit testing should evaluate like module interfaces and data integrity. The overall strategies aim to verify proper integration and that requirements are met across the full system.
The document discusses various software development life cycle (SDLC) models including waterfall, iterative waterfall, V-shaped, prototyping, evolutionary, spiral, RAD, iterative enhancement, and agile models. It provides details on the phases and activities involved in classical waterfall model such as feasibility study, requirements analysis, design, coding, testing, integration, and maintenance. The advantages of waterfall model include being linear, systematic and having proper documentation, while the disadvantages are the inability to accommodate changes and detect errors late in the process. Iterative models allow for feedback loops to catch errors earlier.
Configuration management involves change management, version management, system building, and release management. It ensures changes to software systems are managed and tracked. Version management tracks different versions of components to prevent interference. System building compiles components into executable systems. Release management prepares software for distribution and tracks released versions.
Report on SOFTWARE DEVELOPMENT LIFE CYCLE SDLC Neetu Marwah
The document discusses the software development life cycle (SDLC). It describes SDLC as a process used in software engineering to break down development into distinct phases to better plan and manage projects. The phases include requirements study, design, development, testing, and maintenance. The document outlines each phase in detail and notes the key documents produced and activities involved at each stage of the SDLC process.
The document describes the system development life cycle (SDLC), which is a process used to develop, implement, and retire information systems through several steps: initiation, analysis, design, implementation, and maintenance. It involves analyzing user needs, designing the system, coding, testing, implementation, and maintenance. The waterfall model is presented as a common SDLC approach, consisting of sequential phases from requirements analysis through maintenance. Other SDLC models mentioned include iterative, spiral, object-oriented, rapid application development, and joint application development.
System Development Life Cycle & Implementation of MISGeorge V James
The document discusses the system development life cycle (SDLC) and implementation of management information systems (MIS). It describes the six main stages of the SDLC as investigation, analysis, design, development, implementation, and maintenance. For MIS implementation, it lists four methods: installing a new system, cutting over from an old system, cutting over in segments, or operating systems in parallel before cutting over. It then provides 14 steps for MIS implementation, including planning, acquiring hardware/software, testing, training users, and providing ongoing system maintenance.
Spm unit iii-configuration mgmt-responsibilitiesKanchana Devi
The document discusses various aspects of configuration management including:
1) Baselines provide an official standard for work and record authorized changes until the next baseline.
2) Responsibilities for configuration management include the configuration manager, module owners, and change control board who review proposed changes.
3) Prototypes are incomplete versions of software that can be horizontal to demonstrate scope or vertical to refine specific functions. They can help reduce time and costs but also risks like user confusion.
This document discusses software maintenance and metrics used to measure software complexity. It notes that maintenance makes up 70% of a software's lifecycle costs. Common maintenance activities include enhancements, adaptations, and corrections. Two important source code metrics discussed are Halstead's effort equation and McCabe's cyclomatic complexity, which measure properties of source code like tokens and control flow to evaluate complexity. Maintaining complexity metrics is important during software evolution and maintenance.
Ch 7 integrating quality activities in the projectlife cycleKittitouch Suteeca
The document describes Kittitouch S.'s software engineering course covering various topics:
- Software development methodologies like waterfall, prototyping, spiral, and object-oriented models.
- Factors affecting quality assurance activities and models for quality assurance planning.
- Key software engineering concepts like verification, validation, and qualification.
- A model for evaluating the effectiveness and costs of software quality assurance plans and defect removal activities.
The document includes three revisions by Kittitouch between January and May 2012 with added topics in each revision.
The document discusses the Software Testing Life Cycle (STLC) and compares it to the Software Development Life Cycle (SDLC). It outlines the key phases of the STLC including test planning, test environment setup, test case creation and execution, bug reporting, analysis and fixing. Validation ensures the product meets requirements while verification checks if it is built correctly. Common verification techniques discussed are reviews, inspections, walkthroughs, and testing approaches like unit testing, integration testing, system testing. The V-model is also summarized which involves creating test plans and documents at each stage to test the product as it is developed.
The system development life cycle is a framework consisting of several stages used to develop information systems and software. It includes requirements analysis, design, implementation, and post-implementation maintenance. The key stages are system analysis and design. The stages include recognition of needs, feasibility study, analysis, design, implementation, and post-implementation maintenance. Each stage addresses important questions and lays the foundation for successful completion of subsequent stages.
The System Development Life Cycle (SDLC) describes the stages of a software development project. It involves planning, analysis, design, implementation, testing, and maintenance. In the analysis stage, tools like interviews and documentation are used to understand business needs. The design stage separates logical design, which specifies user needs, from physical design, which specifies how the system will function. Testing occurs at the unit, integration, and system levels to ensure quality before implementation. Post-implementation review evaluates whether the new system meets requirements.
Testing is the process of executing a program to find errors prior to delivery. There are various types of testing including unit, integration, system, and validation testing which help verify requirements are met and defects are discovered. The goal is to have confidence that the system is fit for purpose and meets user expectations depending on how critical the software is and the marketing environment.
The document discusses software engineering processes and provides an overview of key concepts:
1) It describes a process framework that includes core framework activities like requirements analysis, design, coding, and testing, as well as umbrella activities like project management and quality assurance.
2) Process models need to be adaptable to different project types and characteristics. The CMMI model defines goals and practices for process areas.
3) Process patterns provide templates for typical process elements like requirements gathering.
4) Processes should be assessed against criteria to ensure success, with options like CMMI, SPICE, and ISO 9001. Assessment drives process improvement.
5) Individual processes like PSP and TSP emphasize
This document discusses various software testing strategies, including integration testing, validation testing, and system testing. Integration testing involves constructing the program structure while testing for errors in interfacing between components. Validation testing occurs after integration is complete and involves testing the fully assembled package. System testing exercises the entire computer-based system and includes recovery testing, security testing, stress testing, performance testing, and deployment testing.
This document discusses building a software testing environment. It emphasizes that senior management is responsible for creating an environment conducive to effective and efficient testing. This involves addressing topics like management's risk appetite, the role of testing, testing policies, support provided, and resources allocated. It also discusses developing a testing strategy that identifies test factors and phases to reduce risks. The strategy is represented as a test factor/test phase matrix that maps risks to development phases. Overall, the document provides guidance on how management can support testing and stresses the importance of a structured, risk-based approach.
This document discusses configuration management in software engineering. It introduces configuration management as a fundamental activity needed to manage changes to requirements, design, and code. Effective configuration management provides control over a software project using techniques like configuration control, revisions, derivations, versions, deltas, and conditional code. It helps coordinate work among team members and reduces problems caused by simultaneous updates, shared code, and different versions.
A quality management system (QMS) is a formalized system that documents processes, procedures, and responsibilities for achieving quality policies and objectives. It involves three main activities: quality assurance which develops organizational standards, quality planning which selects and modifies standards for specific projects, and quality control which ensures best practices are followed to produce quality products.
This model classifies 11 software quality factors into three categories: product operation factors like correctness and reliability, product revision factors like maintainability and testability, and product transition factors like portability and reusability. These factors determine requirements for the software system's output, failure rate, efficiency, security, usability, and adaptability.
Systems Development Lifecycle Walkthrough (Cambridge Technical Level 3 IT)LucySim1
Describing each of the stages of a systems development lifecycle including different examples and comparisons. This was produced for Unit 11 Cambridge Technical Level 3 IT.
The document provides an overview of software cost estimation, outlining various methods used including algorithmic models like COCOMO, expert judgement, top-down and bottom-up approaches, and estimation by analogy. It discusses COCOMO in detail, including the original COCOMO 81 model and updated COCOMO II model, and emphasizes the importance of calibration for accurate estimates.
The document discusses the system development life cycle (SDLC) process. It describes the main steps in SDLC as feasibility study, system analysis, system design, development, testing, implementation, and maintenance. Each step is then further explained. For example, feasibility study involves technical, economic, and operational feasibility analysis. System analysis involves requirements gathering and documentation. The document also briefly introduces some common SDLC models like waterfall, iterative, and spiral models.
This document discusses software testing strategies. It begins by defining software testing as executing a software system to find errors prior to delivery. It then outlines different testing approaches including unit testing, integration testing, validation testing, and system testing. Unit testing focuses on exercising individual software components to detect errors. The document emphasizes that developers and independent test groups must work together throughout a project to ensure thorough testing. It provides examples of what unit testing should evaluate like module interfaces and data integrity. The overall strategies aim to verify proper integration and that requirements are met across the full system.
The document discusses various software development life cycle (SDLC) models including waterfall, iterative waterfall, V-shaped, prototyping, evolutionary, spiral, RAD, iterative enhancement, and agile models. It provides details on the phases and activities involved in classical waterfall model such as feasibility study, requirements analysis, design, coding, testing, integration, and maintenance. The advantages of waterfall model include being linear, systematic and having proper documentation, while the disadvantages are the inability to accommodate changes and detect errors late in the process. Iterative models allow for feedback loops to catch errors earlier.
Configuration management involves change management, version management, system building, and release management. It ensures changes to software systems are managed and tracked. Version management tracks different versions of components to prevent interference. System building compiles components into executable systems. Release management prepares software for distribution and tracks released versions.
Report on SOFTWARE DEVELOPMENT LIFE CYCLE SDLC Neetu Marwah
The document discusses the software development life cycle (SDLC). It describes SDLC as a process used in software engineering to break down development into distinct phases to better plan and manage projects. The phases include requirements study, design, development, testing, and maintenance. The document outlines each phase in detail and notes the key documents produced and activities involved at each stage of the SDLC process.
The document describes the system development life cycle (SDLC), which is a process used to develop, implement, and retire information systems through several steps: initiation, analysis, design, implementation, and maintenance. It involves analyzing user needs, designing the system, coding, testing, implementation, and maintenance. The waterfall model is presented as a common SDLC approach, consisting of sequential phases from requirements analysis through maintenance. Other SDLC models mentioned include iterative, spiral, object-oriented, rapid application development, and joint application development.
The systems development life cycle (SDLC) describes the process for planning, creating, testing, and deploying an information system. It involves preliminary system study, feasibility study, detailed system study, system analysis, system design, coding, testing, implementation, and maintenance. The SDLC follows a structured process to ensure high quality systems while maximizing productivity and providing management controls. It originated in the 1960s to develop large scale business systems.
Online auction system is web based application, in which the seller can sell the goods by sitting in his own house ,so the main advantage of this application is that there is no more system compatibility requirement problem. The main advantage of the online auction system is that the user can have the better choices for their investment and also it is time saving , and through this system user can invest in their own selected firm.
Here are the DFD diagrams for the Online Auction System:
Level 0 (Context Level) DFD:
Online Auction System (Context Diagram)
Seller - Post Product Details
Buyer - View Auction Updates, Search Products, View Products
Level 1 DFD:
Online Auction System
Seller
- Post Product
- Product Details
Buyer
- Search Products
- View Products Details
Administrator
- Manage Products
- Manage Users
Database
- Product Details
- User Details
This shows the basic data flows in and out of the overall Online Auction System at a high level (Level 0) and then breaks it down further
The document discusses the system development life cycle (SDLC), which includes various phases for developing and maintaining systems. The key phases are: system investigation, feasibility study, system analysis, system design, coding, testing, implementation, and maintenance. The feasibility study phase evaluates the technical, operational, economic, motivational, and schedule feasibility of a proposed system. The system analysis phase involves studying user requirements and the current system. System design then specifies how the new system will meet requirements through elements like data design, user interface design, and process design. This produces specifications for the system.
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.
This document provides information about obtaining fully solved assignments from an assignment help service. It lists the email and phone contact information and requests students to send their semester and specialization to receive help with assignments. It also lists some of the programs and subjects that assignments are available for, including MBADS, MBAFLEX, MBAN2, and PGDISMN.
Information System Acquisition & Lifecycle: system acquisition process, phases: Initiation, Planning, Procurement, System Development, System Implementation, Maintenance & Operations, and Closeout. development models.
The document describes the six phases of the systems development life cycle: 1) preliminary investigation, 2) systems analysis, 3) systems design, 4) systems development, 5) systems implementation, and 6) systems maintenance. Each phase involves specific activities like gathering requirements, designing system components, developing and acquiring software/hardware, testing, training users, and ongoing maintenance. Traceability matrices are used to map requirements to designs and validate that the life cycle process is followed.
This document discusses the Software Development Life Cycle (SDLC), which outlines the formal steps for developing software products. It describes the typical phases of the SDLC as problem definition, program design, coding, debugging, testing, documentation, maintenance, and extension/redesign. Each phase is then further explained in terms of its goals and activities. The document also notes some strengths of the SDLC model for structured development environments and weaknesses for iterative development models.
The document discusses systems analysis and design and the software development life cycle (SDLC). It defines key terms like system, analysis, and design. It then describes the various phases of the SDLC in detail, including definition, development, and maintenance phases. It also discusses different SDLC methodologies like waterfall, spiral, incremental, and agile models. Finally, it explains the V-model for testing in the SDLC and mapping testing phases to development phases.
The document provides an overview of the Software Development Life Cycle (SDLC), which is a process used to develop software in a logical, structured manner. It consists of six phases - system planning, system analysis, system design, system coding, system testing, and deployment and maintenance. The goal of the SDLC is to produce high-quality software that meets customer expectations with the highest quality, lowest cost, and shortest time. Each phase results in deliverables for the next phase and aims to gradually develop the system from inception of an idea through implementation and delivery.
The document describes the software testing life cycle (STLC) and the V-model, two common approaches to software development and testing. The STLC consists of six phases from test planning to post implementation. It includes activities like test case development, testing, bug fixing, and process evaluation. The V-model mirrors development phases on the left side with corresponding testing phases on the right. It depicts the relationships between development and testing activities at each phase.
Running head SDLC1 SDLC2SDLCSai Rohith Cherukumil.docxtoltonkendal
Running head: SDLC
1
SDLC
2
SDLC
Sai Rohith Cherukumilli
Mcnair Donell
Wilmington University
SDLC
All software development processes must follow a professional standard in which the standard procedures are used. Some of the major software development processes used include Waterfall Model, Agile Software Development model, Rapid Development Model, and also Prototyping. Each of these SDLC models follow particular conventional standards set by the different organizations (Rossberg, 2014). The purpose of system development life cycle is to ensure that business requirements are. The process of coming up with a system from scratch to the point where it is to be implemented into the business environment or sold out into the market is the software development life cycle, which is series of processes depending on the model chosen by the developer or the system analyst conducting the system development. Software development life cycle regards the professional process of coming up with a system for use within a business environment.
7-Step SDLC Model: Traditional SDLC Model
This is the most basic model majorly used in the market by most system analysts, and it follows a series of seven different systematic steps to be fully completed. The steps range from system planning, system analysis, system design, system development, system testing, system implementation, and system maintenance. These steps are sequential and perform a similar role of driving towards achieving the sole purpose of final system functionality. According to this 7-step model, the first phase of system planning involves identification of the project requirements. These project scopes are then analyzed and proper required operational standards are identified for correct solutions. Part of the analyses conducted include parameters such as cost implications on the business organization, time required to complete the system, as well as hardware and software requirements that will be used. All processes must be followed lest any skip of any of these processes would impact heavily on the given organization or client in this case, since a miscalculation of any form would cost the company or the analyst. In each step, specific activities are carried out to ensure that the final product achieves its functionality as per the client’s requests.
The next phase of software development life cycle is the feasibility study. Ritchie (2012) proposes that the analysis phase requires proper information gathering techniques and definition of constraints that will be used in the system. The phase involves different techniques of acquiring sufficient information before proceeding to building the system, and this information would be in form of data such as the organization’s processing requirements. The information can be gathered using techniques such as interviews or questionnaires, with subjectivity to have maximum information.
After sufficiently acquiring relevant information, the system analyst the ...
The document discusses the system development life cycle (SDLC), which is a conceptual model for developing or altering systems throughout their lifecycle. The SDLC includes planning, analysis, design, implementation, testing, and maintenance phases. It is a systematic approach that breaks the work into required phases to implement new or modified information systems. The system analyst guides the system development project by defining requirements, designing logical system structures, and ensuring the system meets user needs.
The document provides an overview of different software development methodologies and how testing fits within each. It discusses the waterfall model, incremental/iterative development model, and prototyping model. It then focuses on test-driven development, describing the steps of writing a test first, seeing it fail, making the code pass the test, and refactoring code as needed.
The document discusses various types of audit software and tools used by auditors. It describes generalized audit software (GAS) that can automate audit tasks and specialized audit software designed for specific audit objectives. It also covers integrated test facilities, snapshot techniques, data security procedures like backups, replication, and server clusters. The system development life cycle and auditor's role in reviewing each phase is explained.
The system development life cycle (SDLC) is a framework for developing information systems. It consists of several sequential phases: initial investigation, feasibility study, system analysis, system design, system coding, testing, implementation, and maintenance. In the past, the waterfall approach was used, but now developers may iterate between phases as needed. The goal is to conceive, design, and implement an information system to solve business problems.
Value based approach to heritae conservation -.docxJIT KUMAR GUPTA
Text defines the role, importance and relevance of value based approach in identification, preservation and conservation of heritage to make it more productive and community centric.
This is Stage one of my Future Deep Strike Aircraft project to develop a replacement for the FB-111 / F-111F / F-15E and B-1B. This stage covers requirements and threats. Stage 2 will cover Design Studies, and the CCA Wingman.
World trade center in kerala proposal- AR. DEEKSHITH MAROLI 724519251008 REPORTdeekshithmaroli666
World trade center live proposal in kerala.
Future of our nation is looking towards kerala..?
Yes, because the biggest sludge less port is going to open in kerala soon and also about the hidden massing growth of tourism, it , business sector
2. INDEX
What is SDLC?
Various stages of SDLC.
Conclusion.
References.
3. SDLC
Software Development Life Cycle (SDLC)
or System Development Life Cycle.
System life cycle is an organizational
process of developing and maintaining
system.
It helps in establishing a system project plan
because it gives overall list of processes and
sub-processes required for developing a
system.
4. Phases of SDLC
The phases of SDLC can vary somewhat but
generally include the following:
1. Planning
2. Requirement analysis
3. Feasibility study.
3. System Design.
4. Development of system/Coding.
5. System testing
6. Implementation
7. Maintenance and Evaluation.
5.
6. Planning:
This is the first phase in the systems development
process. It identifies whether or not there is the need for
a new system to achieve a business’s strategic
objectives. This is a preliminary plan for a company’s
business initiative to acquire the resources to build on an
infrastructure to modify or improve a service. The
company might be trying to meet or exceed expectations
for their employees, customers and stakeholders too.
The purpose of this step is to find out the scope of the
problem and determine solutions. Resources, costs,
time, benefits and other items should be considered at
this stage.
7. Requirement gathering and analysis:
Business requirements are gathered in this phase. This
phase is the main focus of the project managers and stake
holders. Meetings with managers, stake holders and users
are held in order to determine the requirements like; Who is
going to use the system? How will they use the
system? What data should be input into the system? What
data should be output by the system? These are general
questions that get answered during a requirements gathering
phase. After requirement gathering these requirements are
analysed for their validity and the possibility of incorporating
the requirements in the system to be development is also
studied.
8. Feasibility study:
The feasibility study is basically the test of the proposed
system in the light of its workability, meeting user’s
requirements, effective use of resources and of course,
the cost effectiveness. These are categorized as
technical, operational, economic, schedule and social
feasibility. The main goal of feasibility study is not to solve
the problem but to achieve the scope. This also defines
the resources needed to complete the detailed
investigation. The result is a feasibility report submitted to
the management. This may be accepted or accepted with
modifications or rejected.
9. System Design:
In this phase the system and software design is
prepared from the requirement specifications
which were studied in the first phase. System
Design helps in specifying hardware and system
requirements and also helps in defining overall
system architecture. The system design
specifications serve as input for the next phase of
the model.
In this phase the testers comes up with the Test
strategy, where they mention what to test, how to
test.
10. The system design needs to be implemented to make it a workable
system , this demands the coding of design into computer
language, i.e., programming language. This is also called the
programming phase in which the programmer converts the program
specifications into computer instructions, which we refer to as
programs. It is an important stage where the defined procedures
are transformed into control specifications by the help of a
computer language. A well written code reduces the testing and
maintenance effort. It is generally felt that the programs must be
modular in nature. This helps in fast development, maintenance
and future changes, if required. Programming tools like compilers,
interpreters and language like c, c++, and java etc., are used for
coding with respect to the type of application. The right
programming language should be chosen for coding. This phase
takes a longer time period.
Development of system/Coding:
11. System Testing:
After the code is developed it is tested against the
requirements to make sure that the product is
actually solving the needs addressed and gathered
during the requirements phase. During this phase
all types of functional testing like unit testing,
integration testing, system testing, acceptance
testing are done as well as non-functional testing
are also done.
12. Implementation:
This phase involves implementation of a
system. In this everyone involved is
absolutely synchronised planned. After
implementation a review is conducted to
determine whether the system is meeting the
expectations an where improvements are
required and needed.
13. Maintenance:
Maintaining the system is an important aspect
of SDLC. As key personnel change positions in the
organization, new changes will be implemented,
which will require system updates. Maintenance is
the process of keeping the software in its fully
functional form and see to that nothing goes wrong.
Maintaining and enhancing software to cope with
newly discovered problems or new requirements can
take far more time than the initial development of the
software.
14. Conclusion:
Systems and Development Life Cycle (SDLC) is a process
used by a systems analyst to develop an information system,
including requirements, validation, training, and user
(stakeholder) ownership. Any SDLC should result in
a high quality system that meets or exceeds customer
expectations, reaches completion within time and
cost estimates, works effectively and efficiently in
the current and planned Information Technology
infrastructure, and is inexpensive to maintain and
cost-effective to enhance.
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