Discussion :: Database System 2 - CS
- When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n):
A.
transitive dependency. |
B.
insertion anomaly. |
C.
referential integrity constraint. |
D.
normal form. |
Answer : Option C
Explanation :
A referential integrity constraint is defined as part of an association between two entity types. The definition for a referential integrity constraint specifies the following information: The principal end of the constraint. (An entity type whose entity key is referenced by the dependent end.)
Be The First To Comment