To include integrity constraint in a existing relation use :
A. Create table
B. Modify table
C. Alter table
D. Drop table
Answer:A
To include integrity constraint in a existing relation use :
A. Create table B. Modify table C. Alter table D. Drop table
Explanation:SYNTAX – alter table table-name add constraint , where constraint can be any constraint on the relation. 2. Which of the following is not a integrity constraint ?