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Data Security and Integrity

Levels of permitted access and access control

  • 3 things to know
  • AS Unit 1

Overview

Access rights, idea of levels of permitted access with an example and principle of least privilege.

What you need to know

Answer each one before you reveal it.

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Key term

How can access be restricted to part of a file rather than all of it?

Key term

How does a database view protect sensitive fields?

Key term

Explain the idea of levels of permitted access with an example.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What are access rights?

    Model answer

    They are the operations each user or group is permitted on each file or record, such as no access, read only, read and write, or the right to delete.

  2. 2

    Explain the idea of levels of permitted access with an example.

    Model answer

    Each role is given only the access its work requires, so in a surgery a receptionist may see appointments and contact details while only a clinician may open the medical notes.

  3. 3

    What is the principle of least privilege?

    Model answer

    Every user and program is given the minimum access needed to do its job and nothing more, so the damage from a mistake or a stolen account is limited.

  4. 4

    How can access be restricted to part of a file rather than all of it?

    Model answer

    Access can be limited by field, so a user sees only certain columns, or by record, so a manager sees only the records belonging to their own branch.

  5. 5

    How does a database view protect sensitive fields?

    Model answer

    The view presents only the fields and records a user is entitled to see, and the underlying table is never reached directly, so restricted fields cannot be read even by accident.

  6. 6

    What is an audit trail?

    Model answer

    It is an automatic log recording who accessed or changed which data and when, kept so that misuse can be detected afterwards and traced to an individual.

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