Question: 7 . A one - to - one binary relationship _ _ _ _ _ . a . involves a single entity type b .

7. A one-to-one binary relationship _____.
a. involves a single entity type
b. involves two entity types
c. allows an occurrence of one entity type to be associated
with several occurrences of another entity type
d. allows an occurrence of one entity type to be associated
with several occurrences of another entity type and vice
versa
e. restricts the number of attributes that an entity ha

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