A combination of two or more columns used to identify particular rows in a relation is a ________.
A) record
B) composite key
C) foreign key
D) surrogate key
Correct Answer:
Verified
Q68: A relation is also known as a(n)_.
A)table
B)tuple
C)relationship
D)attribute
Q69: Having to enter facts about two entities
Q70: Given the functional dependency A → (B,
Q71: Given the functional dependency (A,B)→ C,(A,B)is a
Q72: If the removal of facts about one
Q74: A key consisting of one or more
Q75: When designing a database,one of the candidate
Q76: A combination of one or more columns
Q77: Given the functional dependency (A, B) →
Q78: Saying that two entities are functionally dependent
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