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The CISA® Prep Guide: Mastering the Certified Information Systems Auditor Exam by John Kramer

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6.4. System Specifications

When given the green light to move ahead with the project, the project manager must now get down to the task of specifying the system elements in detail, preparing the detailed work plans that will address all of the builds necessary to meet the functional requirements and users' needs. These system specifications detail the expected behavior of the system and include things such as the following:

  • Individual scenario proofs

  • Documentation templates

  • Individual reports criteria

  • Individual review criteria checkpoints

  • Final use cases against which pilot versions are tested

  • Data flows for transactions

  • The interface points of the users (navigation device definitions)

  • Screen definitions

  • Table definitions

  • Data interface point definitions

  • Standard algorithms

  • Process step-through flows

  • Single-step flowcharts

  • Describing points in the processing where the decision will be made

  • Describing points where data will be stored as part of the process

  • All of the use cases necessary to satisfy the business functionality requirements

System specifications will need to be documented clearly and thoroughly, and the project scope definitions must now be used as a baseline from which variations will be called into question as changes to agreed-upon direction and scope crop up. This task will require that strict controls be put in place to ensure the success of the project as approved. Significant changes to system design and functionality will need to be formally approved by a predetermined authority ...

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