Home » MCQs » DBMS MCQs » DBMS Relational Algebra MCQs

The following conditions must be met by a union operation

14. The following conditions must be met by a union operation.

1. There must be a common attribute between A and B.
2. A duplicate tuple is automatically discarded.
3. Both A. and B.
4. None of the above

Answer: C) Both A. and B.

Explanation:

The following conditions must be met by a union operation:

1. There must be a common attribute between A and B.
2. A duplicate tuple is automatically discarded.