ITPEC FE Morning April 2019 Question 30

Source exam: ITPEC FE Morning April 2019Topic: Databases

ITPEC FE Morning April 2019 — Question 30 of 80

Database Reorganization — periodic maintenance to prevent degradation of access efficiency.

Over time, databases accumulate fragmentation from inserts, updates, and deletes. Reorganization reclaims unused space and restores optimal data layout.

Why not others:
- (a) Backup — creates a copy for recovery, not for performance

- (b) Database dump — exports data (a form of backup)

- (d) Roll back — reverts a transaction to a previous state

Key rule: "Periodically executed to prevent reducing access efficiency" = Reorganization (defragmentation of database storage).

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