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DFD Using a Case Tool: Visible Analysts

DFD Using a Case Tool: Visible Analysts. Yong Choi BPA CSUB. CASE Systems:. Tools used as instruments to make modeling methods, techniques, and procedures operational. Advantages of Using CASE Tools during the Analysis Phase:.

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DFD Using a Case Tool: Visible Analysts

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  1. DFD Using a Case Tool: Visible Analysts Yong Choi BPA CSUB

  2. CASE Systems: Tools used as instruments to make modeling methods, techniques, and procedures operational.

  3. 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.

  4. 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.

  5. CASE Tool Components: • A&D workbench software to create diagrams to illustrate analysis findings. • Dictionary software to enter detailed descriptions for analysis diagram elements.

  6. 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.

  7. 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.

  8. 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.

  9. Visible Analyst CASE tool Demonstration

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