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Unit 1: Database System Architecture

20242m

Which of the following refers to the “data about data”?

  • (i) Directory 
  • (ii) Warehouse 
  • (iii) Sub Data 
  • (iv) Meta Data
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Answer: (iv) Meta Data

Explanation: Metadata is data about data - describes structure, schema, types, constraints, provenance. Examples: data dictionary, schema info, column types. Directory is file listing, Warehouse is integrated storage for analytics, Sub Data is not standard term.

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