Which three statements correctly describe the functions and use of constraints? (Choose three.)
A.
Constraints make complex queries easy.
B.
Constraints provide data independence.
C.
Constraints enforce rules at the table level.
D.
Constraints enforce rules at the view level.
E.
Constraints prevent the deletion of a table if there are dependencies.
F.
Constraints prevent the deletion of an index if there are dependencies.
Explanation:
Constraints have functions to enforce rules at the view and table levels and to prevent the deletion
of data if dependencies exist between tables.