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K3lly_1996_R3ne K3lly_1996_R3ne
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6 years ago
Composite primary keys are particularly useful as identifiers of composite entities, where each primary key combination is allowed only once in the _____ relationship.
 a. 0:1 b. 1:1
  c. 1:M d. M:N
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lightingmcqueenlightingmcqueen
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6 years ago
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