CASE Systems:
Tools used as instruments to make modeling methods, techniques, and procedures operational.
Advantages of Using CASETools during the Analysis Phase:
• More comprehensive and integrated recording of investigation results.
• Uniform recording of analysis for all systems.• Diagram display of analysis results in a form easily
explained to users.• Easy navigation through analysis specifications.• Easily modified entries during the iterative actions
of analysis.
CASE Tool Advantages (Cont)
• CASE tools check for compliance with specific rules for modeling methods, such as balanced I/O checks for DFD levels.
• CASE tools identify inconsistent entries for the same or similar items in the dictionary, such as a logical object defined differently on ERDs and DFDs.
• Facilities for better maintenance of analysis specifications.
CASE Tool Components:
• A&D workbench software to create diagrams to illustrate analysis findings.
• Dictionary software to enter detailed descriptions for analysis diagram elements.
CASE Dictionary Descriptions:
• Preformatted screen data entry and reporting specifications.
• More elaborate narrative explanations of analysis results.
• Reductions in redundancy of analysis specifications.
• Better integrated analysis specifications.• A central repository for analysis documentation.• More easily maintained documentation.
CASE Tools and JADS:
During JADs, analysts use CASE tools and visual aid technologies, such as overhead projector LCD panels, to provide a better way to quickly create DFDs and obtain user feedback regarding the process model.
Use of DFDs in JADS:
• Create DFDs as users speak.
• Review and verify DFDs created during pre-workshop activities or between JAD workshops.
• Make real-time changes made to DFDs as uses speak.