1 / 26

chapter6

chapter6. section II Analysis. for the Small Enterprise. Systems Analysis and Design. the user’s system diagram the menu tree the system flowchart new system design – a first look the cornucopia case portfolio project. Chapter Objectives.

oni
Download Presentation

chapter6

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. chapter6 section II Analysis for the Small Enterprise Systems Analysis and Design the user’s system diagram the menu tree the system flowchart new system design – a first look the cornucopia case portfolio project

  2. Chapter Objectives When you complete this chapter you will be able to: • Create a user-friendly model of how the system works • Create a user-friendly model of functions and services the system provides • Create a system flowchart • Develop several elementary project management tools Systems Analysis and Design for the Small Enterprise 2 Chapter 6

  3. The User’s System Diagram • The user’s system diagram (USD) is an image-based, iconographic version of the DFD • The USD facilitates communication between the user and analyst Systems Analysis and Design for the Small Enterprise 3 Chapter 6

  4. System Models and the Six CIS Components Systems Analysis and Design for the Small Enterprise 4 Chapter 6

  5. TECHNOTE 6-1 The Information System End User The information system end user has become more sophisticated Modern information systems must blend user’s desktop functionality with enterprise-wide in formation systems Systems Analysis and Design for the Small Enterprise 5 Chapter 6

  6. TKSystem USD Set Up Issue Cards Login/Logout Back Up Adjust Hours Reports Replace Cards Systems Analysis and Design for the Small Enterprise 6 Chapter 6

  7. TKSystem USD and DFD Comparison 2 1 2 1 4 3 3 4 5 6 6 5 7 7 Systems Analysis and Design for the Small Enterprise 7 Chapter 6

  8. The Menu Tree A menu tree is a hierarchical display of the operational choices available to the user Systems Analysis and Design for the Small Enterprise 8 Chapter 6

  9. Figure 6-4:TKSystem Menu tree Systems Analysis and Design for the Small Enterprise 9 Chapter 6

  10. TKSystem USD and Menu Tree Comparison 3 1 2 1 6 3 4 4 2 7 5 6 5 7 Systems Analysis and Design for the Small Enterprise 10 Chapter 6

  11. The System Flowchart A system flowchart shows: • the relationships between software and data inputs and outputs • the real-world devices used to implement the system Systems Analysis and Design for the Small Enterprise 11 Chapter 6

  12. TKSystem Flowchart with Symbols Systems Analysis and Design for the Small Enterprise 12 Chapter 6

  13. Figure 6-6: TKSystem Flowchart (Revised) Systems Analysis and Design for the Small Enterprise 13 Chapter 6

  14. New System Design – A First Look • Even though the analyst has not yet engaged in formal design activities, it is natural for the analyst to to consider potential design innovations or modifications while investigating and charting the existing system Systems Analysis and Design for the Small Enterprise 14 Chapter 6

  15. Figure 6-7: The Enhanced SDLC (Reprise) Systems Analysis and Design for the Small Enterprise 15 Chapter 6

  16. TECHNOTE 6-2 Model-Building Software While CASE tools, such as Visible Analyst, offer sophisticated modeling environments, there are other model-building products on the market: Microsoft Visio Rational Rose Oracle Designer Systems Analysis and Design for the Small Enterprise 16 Chapter 6

  17. The Cornucopia Case The formal analysis of the current system concludes with the development of system models. At this point in the process the analysts have a good understanding of the old system and, perhaps surprisingly, a rough idea of what the new system will include. Systems Analysis and Design for the Small Enterprise 17 Chapter 6

  18. Cornucopia Existing System USD Systems Analysis and Design for the Small Enterprise 18 Chapter 6

  19. Cost Breakdown Cornucopia Project Management Hour Breakdown Analyst Hours Log Systems Analysis and Design for the Small Enterprise 19 Chapter 6

  20. Cornucopia Project Budget $4300 estimated total labor cost (86 hours * $50 per hour) Systems Analysis and Design for the Small Enterprise 20 Chapter 6

  21. Cornucopia Project Status 86 estimated total hours Systems Analysis and Design for the Small Enterprise 21 Chapter 6

  22. Cornucopia PERT Worksheet Systems Analysis and Design for the Small Enterprise 22 Chapter 6

  23. Tasks 4,5 Cornucopia PERT Chart Task 3 Task 6 Tasks 1,2 Tasks 7,8 Systems Analysis and Design for the Small Enterprise 23 Chapter 6

  24. Cornucopia Project Dictionary Structure Systems Analysis and Design for the Small Enterprise 24 Chapter 6

  25. Chapter Summary (1/2) • This chapter completes the modeling process • The models provide two views of the system • The technical view of the computer professional • The friendly view of the user • The system flowchart is a technical model showing the relationships between files, programs, and subsystems Systems Analysis and Design for the Small Enterprise 25 Chapter 6

  26. Chapter Summary (2/2) • The menu tree shows the functions of the system • The user’s system diagram uses a picture-based, storytelling technique to help the user understand how the subsystems interface with one another Systems Analysis and Design for the Small Enterprise 26 Chapter 6

More Related