Systems Development Lifecycle

Question 1

Initiation

Answer 1

The original idea
Where does it come from?
Replacing an old system
Automation
Improving business process
New business process

Question 2

Feasibility Study

Answer 2

Test whether the idea is feasible.
Is the technology available/affordable?
Is this necessary? What are the risks/benefits?
Do benefits outweigh the costs?

Question 3

Requirement analysis

Answer 3

Who are the stakeholders? Who are the users? How do they benefit?
What process will the system create/change/support?
Functional and non functional requirements?
Results in a requirements specification

Question 4

System design

Answer 4

What are the target platforms?
What networks are used?
What is the software architecture?
Results in software architecture and design specifications

Question 5

Build

Answer 5

Building the actual software
Writing tests and programming
Software reuse
Results in software product

Question 6

Implementation

Answer 6

How is the software implemented onto hardware and networks so it can be used by the end user?
Was the idea good?
Did the benefits exceed the cost?
Did we meet requirements?
Did we get the design right?
Does it work on the hardware?
Do the users like it?
Does it deliver value?
Result: a live system

Question 7

Maintain

Answer 7

How the software is maintained during its life.

Software needs to be changed to meet changing business needs and technology.

Question 8

Kill

Answer 8

The system is no longer useful.
It costs more to run than it delivers.
There is a better system that replaces this one.