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Entity Relationship Diagrams 1

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cjw2

cjw2

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Is it acceptable when creating an entity relationship diagram to have two separate relationships from say entity A to entity B?
(Going from A to B and from different attributes in A but to the same attribute in B)
 
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Yes. It happens alot, for instance, BillTo and ShipTo Addresses for a Customer, or PerformingDoctor and AttendingDoctor for a Patient.

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