A unary relationship is a relationship between the instances of a ________ entity type,which are also called recursive relationships.
A) Single
B) Double
C) Triple
D) Many
Correct Answer:
Verified
Q50: Each regular entity type in an E-R
Q51: Which relation is created by placing the
Q52: Which relation is created with a composite
Q53: Which relation is created with primary key
Q54: A recursive foreign key is a foreign
Q56: A(n)_ must satisfy referential integrity,which specifies that
Q57: Which relation is created with a composite
Q58: Which relation is created with the primary
Q59: The key should be _; that is,no
Q60: A recursive foreign key is a foreign
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