Match the relational operation with its definition

1. Used to assign a different reference to a field

2. Used to combine two tables over a common attribute

3 . Used to reduce or reorder the number of columns in a table

4. Used to combine tables without reference to a common attribute

5. Used to reduce the number of records in a table

6. Used to extract common records from two tables

7. Used two combine the records from two tables of equivalent structure vertically

8. Used to undo a join or Cartesian Product

9. Used to remove the common records from the first table with respect to the second table

A. Rename B. Projection C. Intersect D.Divide E. Join F. Union G. Difference H. Selection I. Cartesian Product