ELECTRIC CIRCUITS QUIZ

database has no data.

database is relatively small.

database is well-designed.

database is structured.

CHANGE TABLE

RENAME TABLE

None of these

ALTER TABLE

False

True

create a complete backup of the operational database only.

All of these

test any changes on a test database only.

clearly understand the current structure and contents of the database only.

False

True

a logical model.

an internal model.

a conceptual model.

None of these

optimistic

None of these

skeptical

ambivalent

ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);

ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);

None of these

ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0);

True

False

both of these two conditions are met.

any row in the subquery meets the condition only.

neither of these two conditions is met.

all rows in the subquery fail the condition only.