An attribute that appears as a nonkey attribute in one relation and as a primary key attribute (or part of a primary key) in another relation is a:

A) foreign key.
B) candidate key.
C) pointer.
D) relationship key.
E) marker.


A
Explanation: A) For instance, in a CUSTOMER, ORDER relationship, the primary key of CUSTOMER is placed as a foreign key ORDER.
CL

Business

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