Which component of a DBMS stores information about database tables, columns and constraints?
Options
- A. Query processor
- B. Data dictionary
- C. Transaction manager
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
B. Data dictionary
Detailed Explanation
- Data dictionary: Stores metadata about database objects.
- It contains table names, column names, data types, constraints and other definitions.
- It helps the DBMS manage and understand the database structure.