Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test DBMS

Two files in DBMS can be joined into a third file if:

1

they have a row in common

2

they have a field in common

3

they have no records with the same value in the common field

4

More than one of the above

5

None of the above

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