Tag: databases

True

False

+

-

||

*

Projection

Selection

Join

All of the above

Select all columns from EMP;

Select distinct columns from EMP;

Select * from EMP;

All of the above

True

False

True

False

Structured Query Language

Standard Query Language

System Query Language

Simple Query Language

Duplicate

Distinct

Remove

Delete

Single-row subquery, Double-row subquery

Double-row subquery, Multiple-row subquery

Multiple-row subquery

Single-row subquery and Multiple subquery

Only one row

Two rows

Zero rows

There is no such subquery