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End 項目 (Association SSDL)

在 Entity Data Model (EDM) 中,association 項目的 End 子項目會指定經由關聯而相關的實體。下列範例中的關聯會根據經理/員工關聯性來連接 Employee 實體。關聯的兩端具有相同的型別,如同 Type="AdventureWorks.Store.Employee" 指派所指示。

  <Association Name="FK_Employee_Employee_ManagerID">
    <End Role="Employee" Type="Adventureworks.Store.Employee"
                 Multiplicity="0..1" />
    <End Role="Employee1" Type="Adventureworks.Store.Employee"
                Multiplicity="*" />
    <ReferentialConstraint>
      <Principal Role="Employee">
        <PropertyRef Name="EmployeeID" />
      </Principal>
      <Dependent Role="Employee1">
        <PropertyRef Name="ManagerID" />
      </Dependent>
    </ReferentialConstraint>
  </Association>

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概念

End 項目 (Association CSDL)