Information Systems Development

Question 1

Give two properties of Waterfall.

Answer 1

1) Requirements Identified before programming begins, limited as the project progresses
2) Long time elapses between completion of proposal and the delivery of the system.

Planning ->
Analysis ->
Design ->
Implementation->
System

Question 2

Give two properties of Waterfall - V Model

Answer 2

1) Strong focus on testing
2) Requirements are specified, components designed, and testing defined
3) Each level of testing is linked to a part of the analysis or design phase
4) Ensures high level of testing

Analysis -> (tests)
Design -> (tests)
Implementation (Coding)
<-
<- Unit Testing
<- Integration Testing
<- System testing
Acceptance Testing

Question 3

Give two properties of Waterfall - Parallel

Answer 3

1) Divided into subprojects designed and implemented in parallel
2) General design for the whole system is generated
3) Subprojects integrated back to a single system
4) Integration can be challenging (good co-ordination is required)

Planning ->
Analysis->
Design->
(Subprojects 1,2,3 etc.)
(Design ->
Implementation->)
Subprojects -> Implementation -> System

Question 4

Give two properties of Rapid Application Development - Iterative

Answer 4

1) First version developed quickly by mini-waterfall process for feedback
2) Important addition requirements can be incorporated into the system

Planning-> Analysis -> System Version1,2,3 (Analysis, Design and Implementation) -> Final System version

Question 5

Give two properties of Rapid Application Development - System Prototyping

Answer 5

1) Perform analysis, design and implementation phase concurrently (to get a simplified version developed for user feedback and evaluation)
2) System prototype is a “quick and dirty” version of the system
3) After ser reviews, developers re-analyse, re-design and re-implement a 2nd prototype based of feedback, adding more features and correct deficiencies.
4)This continues until the analyst, user and sponsor agree on implementation success.

Planning -> System Prototype (Analysis, Design, Implementation) -> Implementation -> System

Question 6

Give two properties of Rapid Application Development - Throw away prototyping

Answer 6

1) Prototypes to explore design alternatives
2) Not intended to be working systems. Used to understand issues under consideration
3) Probably require several design prototypes during analysis and design phases
4) Chosen prototype is still thrown away

Planning -> Analysis -> Design Prototype (Analysis, Design, Implementation) -> Design -> Implementation -> System

Question 7

Give 4 properties of Agile Development?

Answer 7

1) A group of programming centric methodologies that focus on streamlining the software development stages
2) Much of the modelling and documentation overhead is eliminated
3)Face to face communication is preferred
4) A project emphasises simple, iterative application development in which each iteration is a complete software project, including planning, requirements, analysis, design, coding, testing and documentation
4) Cycles are kept short (1-4 weeks)

User stories -> Sprint Planning -> Sprint Backlog - 2 Week Sprint (Daily Scrum meetings -> Development) -> Sprint Review -> Finished product - Sprint Retrospective

Question 8

Give me two examples of Agile Development Methodologies

Answer 8

1) Extreme Programming (XP)
2) Scrum

Question 9

What main roles does agile development have?

Answer 9

1) Product Manager
2) Scrum manager
3) Development Team Members

Question 10

In Agile Development, How do we document requirements?

Answer 10

We use user stories which document:
- As a Who?
- I want to (What they want to accomplish)
- So that (Why they want to accomplish that)

Question 11

What novel approaches does Agile Development embrace? Pick two.

Answer 11

1) Test-driven development
2) Automated testing
3) Pair programming
4) Simple Design

Question 12

What caused Agile Development to come to play?

Answer 12

Agile practices were created in part because of a dissatisfaction of the inflexible waterfall-based approaches

Question 13

Which methodology is suitable when developing systems with:
Unclear user requirements?

Answer 13

• RAD Iterative
• RAD System prototyping
• RAD Throwaway Prototyping
• Agile Development

Question 14

Which methodology is suitable when developing systems with:
Unfamiliar technology?

Answer 14

• RAD Iterative
• RAD Throwaway Prototyping

Question 15

Which methodology is suitable when developing systems:
That are complex?

Answer 15

• Waterfall
• Waterfall - Parallel
• Waterfall - V-Model
• RAD Iterative

Question 16

Which methodology is suitable when developing systems:
That are reliable?

Answer 16

• Waterfall
• Waterfall - Parallel
• Waterfall - V-Model
• RAD - Iterative
• RAD - Throwaway Prototyping
• Agile Development

Question 17

Which methodology is suitable when developing systems:
With a short time schedule?

Answer 17

• Waterfall - Parallel
• RAD - Iterative
• RAD - System Prototyping
• RAD - Throwaway Prototyping
• Agile Development

Question 18

Which methodology is suitable when developing systems:
with schedule visibility?

Answer 18

RAD - Iterative
RAD - System prototyping
RAD - Throwaway Prototyping
Agile Development

Question 19

In Advanced Analysis and Design, what are the main procedures, in order?

Answer 19

1) Planning
2) Project Management
3) Analysis
4) Design
5) Implementation

Question 20

Name the main roles in software development projects

Answer 20

• Quality Assurance
• UI Designer
• Engineer - Coder
• Documentation
• Test engineer
• Project manager (and managers)
• Product specialist (someone who knows the existing main house products)

Question 21

What are the three main classes methodologies for information system development?

Answer 21

• Water Development
• Rapid Application Development (RAD)
• Agile Development