1 Introduction of Software Enasgineering-Std

8/11/2019 1 Introduction of Software Enasgineering-Std

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I ntroduction of Software Engineer ing

GV: L Ngc Tin

Email: [email protected]

Blog: http://tienhuong.wordpress.com


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What is Software Engineering (SE)

Software has become criticalto advancement in

almost areas of human endeavour. However, there areserious problemsin cost, timelines,

maintenanceand qualityof many software

products.

Software engineering has the objectiveof solving theproblems of software by producing goodquality,

maintainablesoftware, on time, within budget.


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Definition of Software Engineering

Software engineering is the establishment and use of

sound engineeringprinciplesin order to obtaineconomically software that is reliable and works

efficiently on real machines

A discipline whose aim is the production of qualitysoftware, software that is delivered on time, withinbudget, and that satisfies its requirements.


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Software

Consist of:

Programs

Documents

Procedures used to setup and operate the software

system(Program is a subset of software,

or Software is a superset of programs)


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Software applications

System Software:a collection of programs which

provide service to another programs (compilers,operating systems, drivers)

Real Time Software:used to monitor, control andanalyze real world events as they occur (weather

forecasting)

Embedded Software:placed in ROM of theproduct and control various functions of product

Business Software:designed to process businessapplications (employee management, account

management)


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Software applications (cont)

Artificial Intelligence Software:used to solve

complex problems that are not amenable tocomputation (artificial neural network, signal

processing)

Web based Software:the software related to webapplications (HTML, DHTML)

Engineering and Scientific Software:Hugecomputing is required to process data (CAD/CAM

package, MATLAB)


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The Attributes of Good Software

Maintainability

Software must evolve to meet changing needs

Dependability

Software must be trustworthy

Efficiency

Software should not make wasteful use of

system resources

UsabilitySoftware must be usable by the users for which

it was designed


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Terminologies

Product:what is delivered to customer, it mayinclude: source code, specification document,user manual

Process:is the way we produce software. It is a

collection of activities that leads to (a part of) aproduct. An efficient is required to produce goodquality products.


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Terminologies (cont)

Deliverable:What are generated duringsoftware development, example: source code,user manual

Milestone:the events that are used to ascertain

the status of the project, example completion ofdesign documentation is milestone.


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Terminologies (cont)

Generic and Customized Software products:

Generic products:developed for anonymouscustomers, example operating system

Customized products:developed forparticular customers.


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Role of Management in Software Development

The management of software development is

dependent on four factors:

People

ProductProject

Process

DependencyOrder

1

2

3

4


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1 - PEOPLE

Require good manager: A good manager can not

ensure the success of the project but increase theprobability of success.

Manager face challenges:

Plan for the best. Be prepared for worst, expect surprises, but

continue to move forward anyway.

The responsibilityof manager: Motivate,

encourage, guideand controlthe people of

his/her team.


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2 - PRODUCT

Product is what we want to deliver to customers.

So the objectiveand scope of workshould bedefined clearly.

It may help the manager to select the best solutionwithin constraintsimposed by delivery

deadlines, budgetary restrictions, personnel

availability.


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3 - PROCESS

The process is the wayin which we produce

software.

If the process is weak, the end product willundoubtedly suffer.

There are many life cycle modelsprocess improvemodels. Depending on the type of project, asuitable model is selected.


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4 - PROJECT

A proper planningis required to monitorthe

status and to controlthe complexity.

In order to manage a successful project, we mustunderstand what can go wrong and how to do it

right.

We should define concrete requirementsandfreeze them.


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Thank You

GV: L Ngc Tin

Email: [email protected]

Blog: http://tienhuong.wordpress.com