Which of the following is used to indicate a column will not accept NULL values and can be referenced in another table’s foreign key specification?
A. Check constraint
B. Unique constraint
C. Default constraint
D. Informational constraint
Which of the following is used to indicate a column will not accept NULL values and can be referenced in another table’s foreign key specification?
A. Check constraint
B. Unique constraint
C. Default constraint
D. Informational constraint