AS level Computing

Unit 2A Notes

Systems Development

Systems Analysis and design - What's wanted

Systems Development - Building and Programming

Systems Implementation and review - Testing and training

Structured Methods

In the 1960's there were a large number of grand scale projects which came to a disastrous end due to being delivered late, over budget and not working. The reason for this was a chaotic development process e.g. Sid goes ill and no one knows what he has been programming!

As a consequence of this, structured methods have been developed. This is where engineering principles have been applied to the development process (hence the term `software engineering') breaking the whole process up into a series of clearly defined tasks, producing specific deliverables.

Development Process

Outline

Process Deliverable

Set Aims Aims

Investigate Facts

Facts about old system. Requirements of new system

System Analyse Requirements spec. (User requirements...