Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test DBMS Data Warehousing and Data Mining
Which of the following refers to storing a copy of original data separately?
1
Retrieval
2
Backup
3
Recovery
4
More than one of the above
5
None of the above