7. Maintaining Software Solutions

Question 1

What are the reasons for maintenance?

Answer 1

• Changing user requirements
• Upgrading user interface
• Changed in data to be processed
• Introduction of new HW/SW
• Changing organisational focus
• Changed in govt requirements
• Poorly implemented code

Question 2

When should literal constants be used?

Answer 2

• For fixed values that should not change
• Function specific tracking

Question 3

What are the different types of documentation?

Answer 3

User
- User manuals
- Tutorials

// Developer
/ Intrinsic
- Meaningful variable names
- Neatness
- Control structures

/ Internal - comments in code

/ Technical
- Design specifications
- Diagrams, data dictionaries, IPO charts
- Screen design