Chapter 10

Question 1

Five Phases of System Development Life Cycle

Answer 1

1. planning
2. requirement gathering information
3. Design
4. Implementation
5. Maintenance

Question 2

phase 1 planning

Answer 2

The priority is to define the problems (can be internal or external ones) facing the organization

Know boundary’s

feasibility 5 dimensions

• economic
• technical
• operational
• scheduling
• legal

Question 3

Phase 2- Requirement Gathering and Analysis

Answer 3

 Gathering requirements via interviews, surveys, observations, and brainstorming.
 Requirement specification documents. Some rules of thumbs for writing such document from the video on the slides. (1) put a lot of details; (2) assume reader with not background knowledge; (3) use lots of words; (4) brainstorm; and (5) keep adding as you think of more specifications

Question 4

3. Phase 3- Design

Answer 4

 Analysts choose the solution that’s the most realistic and offers the highest payoff for the organization.
 Exact specification for implementing the system should be ready.
 Prototyping
 Small scale version of the system developed

Advantages:
 Help clarify the problems
 Get users involved save later
 training needs
 Reduces cost if the system is canceled because the top management can see what it looks like
 Easier to modify thus make it more likely to have a final system that is highly accepted
 Disadvantages:
 Require more support and time from users and top management
 The prototype can be misleading since it might not be the same as the final system

Question 5

Phase 4- Implementation

Answer 5

 Solution transferred from paper to action
 request for proposal: written documents with detailed specifications used to request bids for equipment, suppliers, or service from vender

Question 6

phase 4 -Know the four types of conversions

Answer 6

 Parallel conversion
 Phased-in-phased-out conversion
 Plunge (direct cutover) conversion
 Pilot conversion

Question 7

Phase 5- Maintenance

Answer 7

: make sure the system is operational as expected; monitoring the performance and make modifications and enhancements if necessary