Information Technology Reference
In-Depth Information
I.
Problem definition
II.
System goals
a. Goal analysis form
III.
System constraints
IV.
System objectives
V.
System performance criteria / quantifiable system
objectives
VI.
Existing system documentation
a.
Process models
1.
Entity-relationship diagrams
2.
Work flow diagrams
3.
Data models
Pseudocode
b.
1.
Data flow diagrams
2.
Object models
Data dictionary
c.
1.
Class diagrams
2.
State diagrams
VII.
New system functional requirements
a.
Functions components matrix
b.
Use cases
VIII.
Development plan
a.
Project risk evaluation form
b.
Risk reduction strategies
c.
Gantt chart
d.
Computer configurations
e.
Network diagrams
f.
Resource availability schedule
g.
Schedule of activities / work plan
h.
Milestone report
IX.
Appendix
a.
Working papers
Figure 2.10
Sample contents of the project dictionary at the end of the analysis stage
2.7 THE DESIGN STAGE
With the functional requirements specifi ed, the developers now prepare the logical design
of the new system. Logical design is technology independent and consists of modeling the
data and the processes of the new system. Logical design consists of four basic steps:
1.
2.
3.
4.
Identify the feasible designs.
Evaluate the feasible designs.
Conduct JAD sessions to confi rm designs and evaluations.
Select the best design.
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