DDL

Database Definition Language

Data Definition Language

Description Data Language

Digital Data Language

Create

Drop

Alter

All of the Mentioned

1

2

3

4

DROP DATABASE

DELETE DATABASE

REMOVE DATABASE

None of the mentioned

DROP DATABASE Sales, NewSales

DROP DATABASE Sales, suppliers

DROP DATABASE Sales and suppliers

DROP DATABASE Sales-suppliers

system.databases

current.databases

sys.databases

status.databases

Alter

Modify

Tailor

Eliminate

Customer must be greater than 21 years old

Customer must have a residence in an Asian Country

Both A and B

None of the above

A Unique constraint allows multiple rows to have NULL value

Integrity constraint can be added to a table even if table data is in violation

A PRIMARY KEY allows a single row to contain NULL

Both A and B

ALTER TABLE Student ADD COLUMN (CGPA NUMBER(3,1));

ALTER TABLE Student CGPA NUMBER(3,1);

ALTER TABLE Student ADD (CGPA NUMBER(3,1));

Both A and C