Which database component stores information about tables, columns and constraints?
Options
- A. Data dictionary
- B. Query optimizer
- C. Transaction log
- D. More than one of the above
- E. None of the above
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Laravel
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
A. Data dictionary
Detailed Explanation
- Data dictionary: Stores metadata about database objects.
- It contains information about tables, columns, data types, constraints and users.
- It is also commonly associated with the system catalog.