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boyob89 boyob89
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7 years ago
If a relationship exists among three or more entities, then:
A) recursive relationships must be established through the use of recursive foreign keys
B) use the primary key of relation A as a foreign key in relations B and C
C) separate relations are established for each class and for each of the subclasses
D) a separate relation with a primary key that is the composite of the primary keys of each of the participating entities is created
Textbook 
Modern Systems Analysis and Design

Modern Systems Analysis and Design


Edition: 4th
Authors:
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Majoring in Economics, minoring in business
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MartyJayMartyJay
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7 years ago
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boyob89 Author
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#2
7 years ago
finally Slight Smile

thx for your expertise
Majoring in Economics, minoring in business
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#3
7 years ago
Anytime
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