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Data Management - Applications - C170 Performance Labs - uCertify
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1.1.1 - Conceptual Schema - ER Model Tables: Customer, DonutOrder, Donut - Customer: PK - CustomerID Rest are customer related fields DonutOrder: FK - CustomerID, FK - DonutID Qty, SpecialNotes Donut: PK - DonutID Rest are donut fields Relationships: Customer - 1:n Identifying - DonutOrder DonutOrder - n:1 Identifying - Donut Why are the relationships in 1.1.1 Identifying? - The PK's of Customer and Donut are included in the composite primary key of DonutOrder. 2.1.1 - Physical Scheme - ER Model Tables: Customer, DonutOrder, Donut - Customer: PK - CustomerID
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Data Management - Applications - C170 Performance
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data management applications c170 performance
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