Software Engineering Layered Technology Software Process Framework

Shree S’ad Vidya Mandal Institute Of
Technology
NAME ENROLLMENT NO.
Raj Bhavsar 150450116009
Jainam Kapadiya 150450116014
Topic :- Software Engineering
Layered Technology
Software Process Framework
Subject :- Software Engineering (SE)

Contents
 What is software engineering?
 Layered technology
 Software process framework
• Common Process Framework Activities
• Umbrella Activities

What is software engineering?
 The application of a systematic, disciplined, quantifiable approach to the development, operation, and
maintenance of software; that is, the application of engineering to software.
 Software engineering is the establishment and use of sound engineering principles in order to obtain
economically software that is reliable and works efficiently on real machines.
 Software engineering is also:-
• A modeling activity
• A problem-solving activity
• A knowledge acquisition activity
• A rationale-driven activity

 Software engineers should adopt
• Systematic and organized approach to their work
• Use appropriate tools and techniques depending on the problem to be solved
• The development constraints and the resources available
 Software Engineering is the science and art of building (designing and writing programs) a software
systems that are:
• On time
• On budget
• With acceptable performance
• With correct operation

 Software Engineering is a layered technology.
Quality focus:-
 Main principle of Software Engineering is Quality focus.
 An engineering approach must have a focus on quality.
 Total Quality Management(TQM), Six Sigma, ISO 9001, ISO 9000-3 , Capability Maturity Model(CMM) ,
CMMI & similar approaches encourages a continuous process improvement culture.
Process :-
 The foundation for software engineering is the process layer.
 Software engineering process is the glue that holds the technology layers together.
 Process defines a framework activities for effective delivery of software engineering technology.
A Layered Technology

Methods :-
 Software engineering methods provide the technical how-to's for building software.
 Methods encompass a broad array of tasks that include requirements analysis, design, program construction,
testing, and support.
 Software engineering methods rely on a set of basic principles that govern each area of the technology and include
modeling activities and other descriptive techniques.
Tools :-
 Software engineering tools provide automated or semi-automated support for the process and the methods.
 When tools are integrated so that information created by one tool can be used by another, a system for the support
of software development, called computer-aided software engineering, is established.
 CASE combines software, hardware, and a software engineering database (a repository containing important
information about analysis, design, program construction, and testing) to create a software engineering
environment analogous to CAD/CAE (computer-aided design/engineering) for hardware.

Software process framework
A software process:-
 is a roadmap to building high quality software products.
 provides a framework for managing activities.
 adapts to meet needs of software engineers and managers.
What is a process?
 Sequence of steps required to develop or maintain software.
Characteristics
 prescribes major activities
 constraints and controls apply to activities, resources, and products
 utilizes resources, subject to constraints such as schedule, to produce intermediate and final results
 constraints on activities: time, budget, tools
 controls on activities: reports

Process framework
Framework activities
work tasks
work products
milestones & deliverables
QA checkpoints
Umbrella Activities

COMMUNICATION Communication with
customers/ stackholders
to understand project
requirements for defining
software features.
MODELING Creating models to
understand requirements
and shows design of
software to achieve
requirements.
PLANNING Software Project Plan which
defines workflow that is to
follow. It describes technical
task, risks, resources, product
to be produced & work
schedule.
CONSTRUCTIONS Code generation (manual or
automated) & testing (to
uncover errors in the code)
DEPLOYMENT Deliver Software to
Customer collect
feedback from customer
based on evaluation
Software Support
Common Process Framework Activities

Umbrella Activities
Software project tracking and control
 Assessing progress against the project plan.
 Take adequate action to maintain schedule.
Formal technical reviews
 Assessing software work products in an effort to uncover and remove errors before goes into next action or
activity.
Software quality assurance
 Define and conducts the activities required to ensure software quality.
Software configuration management
 Manages the effects of change.
Document preparation and production
 Help to create work products such as models, documents, logs, form and list.

Reusability management
 Define criteria for work product reuse
 Mechanisms to achieve reusable components.
Measurement
 Define and collects process, project, and product measures
 Assist the team in delivering software that meets customer’s needs.
Risk management
 Assesses risks that may effect that outcome of project or quality of product (i.e. software)

Software Engineering Layered Technology Software Process Framework

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