G. Logical model design
1. Data flow diagrams
• Context diagram
• Diagram 0
o Diagram 1 (Diagram 1 is optional)
• Descriiptions of processes in each diagram
2. Descriiptions of outputs/inputs/performance/security or controls
H. Specific requirements, if any (interface, operational, resource, performance, etc.)
Phase 2: System and database design
A. User interface
Design an overall user interface consisting of screens, commands, controls, and features to enable users to use the system.
1. How data will be input to the system?
• The physical layout for each input
• The input design and procedures
2. How data will be output from the system?
• The physical layout for each output
• The output design and procedures
B. Data design
Develop a plan for data organization, storage, updating, and retrieval.
1. Database design
• Database tables with their attributes should be presented
• Primary key(s) should be identified in each table, if any
• Three steps of normalization should be included.
2. Entity-relationship diagrams
3. Data file storage and access
C. System architecture
Determine the architecture of the system as Web-based interface, client/server architecture, Internet/Intranet interface, network configuration, etc.
Phase 3: Project plan
A list of tasks or activities needed for implementing the proposed system
Estimating completion time and costs
