Q: Which component of a DBMS describes the metadata and provides information about the structure and organization of the database?

A Data dictionary
B Transaction manager
C Query optimizer
D Concurrency control module

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Answer: A

Explanation:

A data dictionary, also known as a catalog, is a user-accessible component of a DBMS that contains metadata about the database.
It describes the structure, organization, and relationships between data elements in the database.

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Q: Which component of a DBMS describes the metadata and provides information about the structure and organization of the database?

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