Which constraint can be defined only at the column level?
A.
PRIMARY KEY
B.
FOREIGN KEY
C.
CHECK
D.
NOT NULL
E.
UNIQUE
Which constraint can be defined only at the column level?
Which constraint can be defined only at the column level?
Which constraint can be defined only at the column level?
Which constraint can be defined only at the column level?
A.
PRIMARY KEY
B.
FOREIGN KEY
C.
CHECK
D.
NOT NULL
E.
UNIQUE