Esquema de almacenamiento de AdventureWorks Sales (EDM)

En el Entity Data Model (EDM), los metadatos de almacenamiento se definen en el lenguaje de definición de esquemas de almacenamiento (SSDL). En este ejemplo, el esquema SSDL representa las tablas y claves de datos en el ejemplo Adventure Works.

Esquema SSDL

El ejemplo siguiente contiene los metadatos para las cinco tablas de la base de datos de Adventure Works. La sintaxis XML se utiliza para definir las estructuras del modelo de almacenamiento. Los conjuntos de entidades representan tablas. Los tipos de entidad representan las filas. Las propiedades representan las columnas en filas. Las asociaciones representan las relaciones de clave externa. Los conjuntos de asociaciones definen lógicamente el ámbito de las asociaciones.

Este esquema se utiliza para asignar el modelo que se encuentra en el tema anterior Esquema conceptual de AdventureWorks Sales (EDM) al almacenamiento.

El esquema SSDL completo se muestra en el ejemplo siguiente.

<?xml version="1.0" encoding="utf-8"?>
<Schema Namespace="AdvWrksSalesModel.Store" Alias="Self"
    Provider="System.Data.SqlClient"
    ProviderManifestToken="2005"
    xmlns="https://schemas.microsoft.com/ado/2006/04/edm/ssdl">
  <EntityContainer Name="Person">
    <EntitySet Name="Address" EntityType="AdvWrksSalesModel.Store.Address" />
    <EntitySet Name="Contact" EntityType="AdvWrksSalesModel.Store.Contact" />
    <EntitySet Name="Product" EntityType="AdvWrksSalesModel.Store.Product" Schema="Production" />
    <EntitySet Name="SalesOrderDetail" EntityType="AdvWrksSalesModel.Store.SalesOrderDetail" Schema="Sales" />
    <EntitySet Name="SalesOrderHeader" EntityType="AdvWrksSalesModel.Store.SalesOrderHeader" Schema="Sales" />
    <AssociationSet Name="FK_SalesOrderDetail_SalesOrderHeader_SalesOrderID" Association="AdvWrksSalesModel.Store.FK_SalesOrderDetail_SalesOrderHeader_SalesOrderID">
      <End Role="SalesOrderHeader" EntitySet="SalesOrderHeader" />
      <End Role="SalesOrderDetail" EntitySet="SalesOrderDetail" />
    </AssociationSet>
    <AssociationSet Name="FK_SalesOrderHeader_Address_BillToAddressID" Association="AdvWrksSalesModel.Store.FK_SalesOrderHeader_Address_BillToAddressID">
      <End Role="Address" EntitySet="Address" />
      <End Role="SalesOrderHeader" EntitySet="SalesOrderHeader" />
    </AssociationSet>
    <AssociationSet Name="FK_SalesOrderHeader_Address_ShipToAddressID" Association="AdvWrksSalesModel.Store.FK_SalesOrderHeader_Address_ShipToAddressID">
      <End Role="Address" EntitySet="Address" />
      <End Role="SalesOrderHeader" EntitySet="SalesOrderHeader" />
    </AssociationSet>
    <AssociationSet Name="FK_SalesOrderHeader_Contact_ContactID" Association="AdvWrksSalesModel.Store.FK_SalesOrderHeader_Contact_ContactID">
      <End Role="Contact" EntitySet="Contact" />
      <End Role="SalesOrderHeader" EntitySet="SalesOrderHeader" />
    </AssociationSet>
  </EntityContainer>
  <EntityType Name="Address">
    <Key>
      <PropertyRef Name="AddressID" />
    </Key>
    <Property Name="AddressID" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
    <Property Name="AddressLine1" Type="nvarchar" Nullable="false" MaxLength="60" />
    <Property Name="AddressLine2" Type="nvarchar" MaxLength="60" />
    <Property Name="City" Type="nvarchar" Nullable="false" MaxLength="30" />
    <Property Name="StateProvinceID" Type="int" Nullable="false" />
    <Property Name="PostalCode" Type="nvarchar" Nullable="false" MaxLength="15" />
    <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" />
    <Property Name="ModifiedDate" Type="datetime" Nullable="false" />
  </EntityType>
  <EntityType Name="Contact">
    <Key>
      <PropertyRef Name="ContactID" />
    </Key>
    <Property Name="ContactID" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
    <Property Name="NameStyle" Type="bit" Nullable="false" />
    <Property Name="Title" Type="nvarchar" MaxLength="8" />
    <Property Name="FirstName" Type="nvarchar" Nullable="false" MaxLength="50" />
    <Property Name="MiddleName" Type="nvarchar" MaxLength="50" />
    <Property Name="LastName" Type="nvarchar" Nullable="false" MaxLength="50" />
    <Property Name="Suffix" Type="nvarchar" MaxLength="10" />
    <Property Name="EmailAddress" Type="nvarchar" MaxLength="50" />
    <Property Name="EmailPromotion" Type="int" Nullable="false" />
    <Property Name="Phone" Type="nvarchar" MaxLength="25" />
    <Property Name="PasswordHash" Type="varchar" Nullable="false" MaxLength="128" />
    <Property Name="PasswordSalt" Type="varchar" Nullable="false" MaxLength="10" />
    <Property Name="AdditionalContactInfo" Type="xml" />
    <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" />
    <Property Name="ModifiedDate" Type="datetime" Nullable="false" />
  </EntityType>
  <EntityType Name="Product">
    <Key>
      <PropertyRef Name="ProductID" />
    </Key>
    <Property Name="ProductID" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
    <Property Name="Name" Type="nvarchar" Nullable="false" MaxLength="50" />
    <Property Name="ProductNumber" Type="nvarchar" Nullable="false" MaxLength="25" />
    <Property Name="MakeFlag" Type="bit" Nullable="false" />
    <Property Name="FinishedGoodsFlag" Type="bit" Nullable="false" />
    <Property Name="Color" Type="nvarchar" MaxLength="15" />
    <Property Name="SafetyStockLevel" Type="smallint" Nullable="false" />
    <Property Name="ReorderPoint" Type="smallint" Nullable="false" />
    <Property Name="StandardCost" Type="money" Nullable="false" />
    <Property Name="ListPrice" Type="money" Nullable="false" />
    <Property Name="Size" Type="nvarchar" MaxLength="5" />
    <Property Name="SizeUnitMeasureCode" Type="nchar" MaxLength="3" />
    <Property Name="WeightUnitMeasureCode" Type="nchar" MaxLength="3" />
    <Property Name="Weight" Type="decimal" Precision="8" Scale="2" />
    <Property Name="DaysToManufacture" Type="int" Nullable="false" />
    <Property Name="ProductLine" Type="nchar" MaxLength="2" />
    <Property Name="Class" Type="nchar" MaxLength="2" />
    <Property Name="Style" Type="nchar" MaxLength="2" />
    <Property Name="ProductSubcategoryID" Type="int" />
    <Property Name="ProductModelID" Type="int" />
    <Property Name="SellStartDate" Type="datetime" Nullable="false" />
    <Property Name="SellEndDate" Type="datetime" />
    <Property Name="DiscontinuedDate" Type="datetime" />
    <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" />
    <Property Name="ModifiedDate" Type="datetime" Nullable="false" />
  </EntityType>
  <EntityType Name="SalesOrderDetail">
    <Key>
      <PropertyRef Name="SalesOrderID" />
      <PropertyRef Name="SalesOrderDetailID" />
    </Key>
    <Property Name="SalesOrderID" Type="int" Nullable="false" />
    <Property Name="SalesOrderDetailID" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
    <Property Name="CarrierTrackingNumber" Type="nvarchar" MaxLength="25" />
    <Property Name="OrderQty" Type="smallint" Nullable="false" />
    <Property Name="ProductID" Type="int" Nullable="false" />
    <Property Name="SpecialOfferID" Type="int" Nullable="false" />
    <Property Name="UnitPrice" Type="money" Nullable="false" />
    <Property Name="UnitPriceDiscount" Type="money" Nullable="false" />
    <Property Name="LineTotal" Type="numeric" Nullable="false" Precision="38" Scale="6" StoreGeneratedPattern="Computed" />
    <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" />
    <Property Name="ModifiedDate" Type="datetime" Nullable="false" />
  </EntityType>
  <EntityType Name="SalesOrderHeader">
    <Key>
      <PropertyRef Name="SalesOrderID" />
    </Key>
    <Property Name="SalesOrderID" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
    <Property Name="RevisionNumber" Type="tinyint" Nullable="false" />
    <Property Name="OrderDate" Type="datetime" Nullable="false" />
    <Property Name="DueDate" Type="datetime" Nullable="false" />
    <Property Name="ShipDate" Type="datetime" />
    <Property Name="Status" Type="tinyint" Nullable="false" />
    <Property Name="OnlineOrderFlag" Type="bit" Nullable="false" />
    <Property Name="SalesOrderNumber" Type="nvarchar" Nullable="false" MaxLength="25" StoreGeneratedPattern="Computed" />
    <Property Name="PurchaseOrderNumber" Type="nvarchar" MaxLength="25" />
    <Property Name="AccountNumber" Type="nvarchar" MaxLength="15" />
    <Property Name="CustomerID" Type="int" Nullable="false" />
    <Property Name="ContactID" Type="int" Nullable="false" />
    <Property Name="SalesPersonID" Type="int" />
    <Property Name="TerritoryID" Type="int" />
    <Property Name="BillToAddressID" Type="int" Nullable="false" />
    <Property Name="ShipToAddressID" Type="int" Nullable="false" />
    <Property Name="ShipMethodID" Type="int" Nullable="false" />
    <Property Name="CreditCardID" Type="int" />
    <Property Name="CreditCardApprovalCode" Type="varchar" MaxLength="15" />
    <Property Name="CurrencyRateID" Type="int" />
    <Property Name="SubTotal" Type="money" Nullable="false" />
    <Property Name="TaxAmt" Type="money" Nullable="false" />
    <Property Name="Freight" Type="money" Nullable="false" />
    <Property Name="TotalDue" Type="money" Nullable="false" StoreGeneratedPattern="Computed" />
    <Property Name="Comment" Type="nvarchar" MaxLength="128" />
    <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" />
    <Property Name="ModifiedDate" Type="datetime" Nullable="false" />
  </EntityType>
  <Association Name="FK_SalesOrderDetail_SalesOrderHeader_SalesOrderID">
    <End Role="SalesOrderHeader" Type="AdvWrksSalesModel.Store.SalesOrderHeader" Multiplicity="1">
      <OnDelete Action="Cascade" />
    </End>
    <End Role="SalesOrderDetail" Type="AdvWrksSalesModel.Store.SalesOrderDetail" Multiplicity="*" />
    <ReferentialConstraint>
      <Principal Role="SalesOrderHeader">
        <PropertyRef Name="SalesOrderID" />
      </Principal>
      <Dependent Role="SalesOrderDetail">
        <PropertyRef Name="SalesOrderID" />
      </Dependent>
    </ReferentialConstraint>
  </Association>
  <Association Name="FK_SalesOrderHeader_Address_BillToAddressID">
    <End Role="Address" Type="AdvWrksSalesModel.Store.Address" Multiplicity="1" />
    <End Role="SalesOrderHeader" Type="AdvWrksSalesModel.Store.SalesOrderHeader" Multiplicity="*" />
    <ReferentialConstraint>
      <Principal Role="Address">
        <PropertyRef Name="AddressID" />
      </Principal>
      <Dependent Role="SalesOrderHeader">
        <PropertyRef Name="BillToAddressID" />
      </Dependent>
    </ReferentialConstraint>
  </Association>
  <Association Name="FK_SalesOrderHeader_Address_ShipToAddressID">
    <End Role="Address" Type="AdvWrksSalesModel.Store.Address" Multiplicity="1" />
    <End Role="SalesOrderHeader" Type="AdvWrksSalesModel.Store.SalesOrderHeader" Multiplicity="*" />
    <ReferentialConstraint>
      <Principal Role="Address">
        <PropertyRef Name="AddressID" />
      </Principal>
      <Dependent Role="SalesOrderHeader">
        <PropertyRef Name="ShipToAddressID" />
      </Dependent>
    </ReferentialConstraint>
  </Association>
  <Association Name="FK_SalesOrderHeader_Contact_ContactID">
    <End Role="Contact" Type="AdvWrksSalesModel.Store.Contact" Multiplicity="1" />
    <End Role="SalesOrderHeader" Type="AdvWrksSalesModel.Store.SalesOrderHeader" Multiplicity="*" />
    <ReferentialConstraint>
      <Principal Role="Contact">
        <PropertyRef Name="ContactID" />
      </Principal>
      <Dependent Role="SalesOrderHeader">
        <PropertyRef Name="ContactID" />
      </Dependent>
    </ReferentialConstraint>
  </Association>
</Schema>

Vea también

Conceptos

Esquema conceptual de AdventureWorks Sales (EDM)
Esquema de asignación de AdventureWorks Sales (EDM)
Conexión de AdventureWorks Sales (EDM)