Software development activities

Software development activities

l

Note ¡°activities¡± ¨C not ¡°steps¡±

l

l

1.

2.

3.

4.

5.

Often happening simultaneously

Not necessarily discrete

Planning: mostly study the requirements

Domain analysis: study the problem area

System design: devise computer solution

Implementation: write the code

Testing, documentation, maintenance, ¡­

Software engineering

l

l

l

A subset of system engineering

Covers all software development activities,

planning through maintenance

Also includes various management tasks

¨C Determine project roles, and assign personnel

¨C Create and monitor development schedules

¨C Some client relations and customer support

l

Guided by CS theory

¨C But really just heuristics, and often ad hoc

Professional, ethical responsibility

l

Above all, do no harm! (Hippocratic Oath)

¨C NO VIRUSES or other malicious programs

¨C Avoid inventing ¡°the bomb¡± or a plague, or ¡­

Basically demonstrate loyalty to employer,

clients, co-workers, country, humanity, ¡­

l See ¡°Software Engineering Code of Ethics and

Professional Practice¡± by ACM/IEEE-CS at

l



Development process modeling

The

classic:

l Step

after

step,

after

step, ¡­

l Never

back up

l

Requirements

Analysis

System

Design

The

Waterfall

Model

Program

Design

Coding

Testing

(several steps)

Operation &

Maintenance

Alternatives to waterfall model

Requirements

Analysis

System

Design

Maintenance

Program

Design

Delivery

System

Testing

Coding

Integration

Testing

Okay, we

all agree ¨C

this extreme

doesn¡¯t

work either

l Is there a

middle

ground?

l

Unit

Testing

Software Development Reality

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download