engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 DBMS Query Language Relational Algebra
In context with Relational Algebra, which of the following are Unary operators?
1. Select
2. Project
3. Union
4. Product
1
All are binary
2
1 and 3 only
3
2 and 4 only
4
1 and 2 only