A recursive relationship is one in which a relationship can exist between occurrences of the same entity set
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Q12: A weak relationship exists if the primary
Q20: In the original Chen model,each attribute is
Q22: Attributes may share a _.
A) name
B) domain
C)
Q23: The set of possible values for an
Q24: Relationships operate only in one direction.
Q26: A relationship is identified by a name
Q27: In an ER diagram,primary keys are indicated
Q28: A _ identifier is composed of more
Q29: Some _ database modeling concepts can be
Q30: Ideally,an entity identifier is composed of _
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