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The Development Project: Build, Testing and Evaluation

Documentation for the completed system

  • 3 things to know
  • A2 Unit 2

Overview

What is handed over with a finished system, what the technical documents must record about the data and the processing, why decisions and their reasons are written down, and the test of whether the documentation is adequate.

What you need to know

Answer each one before you reveal it.

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Key term

How does documentation relate to the handover of the system?

Key term

What documentation is delivered with a completed system?

Key term

Why is technical documentation delivered to the client rather than kept by the developer?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What documentation is delivered with a completed system?

    Model answer

    A completed system is delivered with user documentation explaining how to operate it, and technical documentation recording how it is built — the data model, the module descriptions, the algorithms, the test plan and log, and the installation details.

  2. 2

    Why is technical documentation delivered to the client rather than kept by the developer?

    Model answer

    The client owns the system and may use someone else to maintain it, so the knowledge of how it works has to be handed over with it, or the client is tied to one developer for the system's life.

  3. 3

    What should technical documentation contain about the data?

    Model answer

    It should contain the entity-relationship diagram, every table with its attributes, types, sizes, keys and validation, the relationships and the integrity rules, and the normalisation that produced the structure.

  4. 4

    What should technical documentation contain about the processing?

    Model answer

    It should contain a description of each module and its purpose, the algorithms for anything involving calculation, decision or repetition, and the interfaces between modules, including the data each passes.

  5. 5

    Why is the test plan and its log part of the delivered documentation?

    Model answer

    They are the evidence that the system was checked against its requirements, and they give a maintainer a ready set of tests with known correct answers to re-run after any future change.

  6. 6

    What should the installation documentation record?

    Model answer

    It should record the hardware and software the system requires, the steps to install it, any configuration settings, the licences held, and how backups are taken and restored.

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