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Unit 4 – Database Security

20212m

______________allows a system administrator to associate a function with a relation; the function returns a predicate that must be added to any query that uses the relation.

  • (i) OpenID
    (ii) Single-site system
    (iii) Security Assertion Markup Language (SAML)
    (iv) Virtual Private Database (VPD)
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Answer: (iv) Virtual Private Database (VPD)

Explanation: VPD (Row Level Security, e.g., Oracle VPD) allows associating a function/policy with a table that appends a predicate (WHERE clause) to every query on that table for fine-grained access control. Example: function returns 'dept = USER_DEPT'. OpenID is authentication, SAML is SSO assertion language, Single-site is not relevant.

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