A) ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0);
B) ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);
C) ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);
D) None of the above is correct.
A) ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0);
B) ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);
C) ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);
D) None of the above is correct.