Computer Science · Database Management Systems
In a Database Management System (DBMS), does a database index occupy storage space on the disk?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1No, indexes are kept only in the main memory (RAM).
- 2Yes, indexes are persistent data structures stored on the disk.✓
- 3No, they only take space dynamically when a query runs.
- 4Yes, but they are only stored on the disk if the table size exceeds 1 GB.
Correct answer
Yes, indexes are persistent data structures stored on the disk.
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