Constraint checking can be disabled in existing _______________ and _____________ constraints so that any data you modify or add to the table is not checked against the constraint.
A. CHECK, FOREIGN KEY
B. DELETE, FOREIGN KEY
C. CHECK, PRIMARY KEY
D. PRIMARY KEY, FOREIGN KEY
Answer:A
Constraint checking can be disabled in existing _______________ and _____________ constraints so that any data you modify or add to the table is not checked against the constraint.
A. CHECK, FOREIGN KEY B. DELETE, FOREIGN KEY C. CHECK, PRIMARY KEY D. PRIMARY KEY, FOREIGN KEY
Explanation: Check and foreign constraints are used to constraint the table data. 5. Problems occurs if we don’t implement proper locking strategy