Multiple choice technology databases

Which of the following contains Database Descriptors(DBD)

  1. DB2 Directory

  2. DB2 Catalog

  3. Optimizer

  4. Data Manager
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A Correct answer
Explanation

The DB2 Directory contains Database Descriptors (DBDs), which are internal control structures describing database physical structures. The DB2 Catalog stores metadata about database objects, the Optimizer uses statistics for access path selection, and the Data Manager manages actual data access.

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