Friday, July 25, 2008
Entity - Relationship Diagram (ERD)
A Fitness Centre advertises to many customers. A customer can register to the Fitness Centre for the My_Fitness program by providing certain personal information such as name, age etc. The Fitness Centre keeps its customer information in a database. The Fitness Centre has many My_Fitness kiosk for the customer's usage. A customer uses one My_Fitness kiosk and activities during the exercise session is updated in the customer's database.
Data Flow Diagram
Context Level
This level shows the overall framework of the system and it's operating environment and shows the whole system as just one process
Friday, July 18, 2008
Activity on Arrow (AOA)
Estimation for our software project is done on time schedule and resources including manpower and equipment. We used the Three-point Estimation Technique to compute the expected value (EV). Then recorded our datas into an activity precedence table. The table was used to construct project planning diagram. Calculation of the project duration or critical path was done usingEarliest Start Time (EST) and Latest Finish Time (LFT). Available time for an activity is equal to LFT - EST , while the Total float (slack) is equal to available time - time estimate. All activities with zero float time (no slack) form the critical path of the project. Any delay on these activities will directly affect the project duration unless time is made up elsewhere.
A) Software system design**
B) Team formation and task distribution
C) Source gathering and data mining (quick design)
D) Software design (Actual development)**
E) Prototype building as evaluation**
F) Design refinement**
G) Software testing and improvement
H) Quality check and customer feedback**
I) Final Modification**
J) Project Presentation**
Gantt Chart
A Gantt chart is a popular type of bar chart that illustrates the start and finish dates of the project activities.A common criticism is that Gantt charts communicate relatively little information per unit area of display. A Gantt chart focus primarily on schedule management so it does not represent the size of a project or the relative size of work elements, therefore the magnitude of a behind-schedule condition is easily misinterpreted. A related criticism is that all activities of a Gantt chart show planned workload as constant. In practice, many activities have front-loaded or back-loaded work plans.