Schemi del servizio Web Books Authors (applicazione di esempio EDM)

Le tre entità Entity Data Model (EDM) e le due associazioni EDM utilizzate dal servizio Web Books Authors descritto in questo gruppo di argomenti sono implementate negli schemi e nella specifica di mapping seguenti.

Schema concettuale

Lo schema seguente dichiara e definisce le entità e le associazioni utilizzando il linguaggio CSDL (Conceptual Schema Definition Language).

<?xml version="1.0" encoding="utf-8"?>
<Schema Namespace="BooksAuthorsModel" Alias="Self" xmlns="https://schemas.microsoft.com/ado/2006/04/edm">

  <EntityContainer Name="BooksAuthorsEntities">
    <EntitySet Name="Authors" EntityType="BooksAuthorsModel.Authors" />
    <EntitySet Name="Books" EntityType="BooksAuthorsModel.Books" />
    <EntitySet Name="BooksInfo"
          EntityType="BooksAuthorsModel.BooksInfo" />
    <AssociationSet Name="FK_AuthorId"
          Association="BooksAuthorsModel.FK_AuthorId">
      <End Role="Authors" EntitySet="Authors" />
      <End Role="BooksInfo" EntitySet="BooksInfo" />
    </AssociationSet>
    <AssociationSet Name="FK_BookId"
          Association="BooksAuthorsModel.FK_BookId">
      <End Role="Books" EntitySet="Books" />
      <End Role="BooksInfo" EntitySet="BooksInfo" />
    </AssociationSet>
  </EntityContainer>
  <EntityType Name="Authors">
    <Key>
      <PropertyRef Name="AuthorId" />
    </Key>
    <Property Name="AuthorId" Type="Guid" Nullable="false" />
    <Property Name="LastName" Type="String" Nullable="false" />
    <Property Name="FirstName" Type="String" />
    <NavigationProperty Name="BooksInfo"
         Relationship="BooksAuthorsModel.FK_AuthorId"
         FromRole="Authors" ToRole="BooksInfo" />
  </EntityType>
  <EntityType Name="Books">
    <Key>
      <PropertyRef Name="BookId" />
    </Key>
    <Property Name="BookId" Type="String" Nullable="false" />
    <Property Name="Title" Type="String" Nullable="false" />
    <NavigationProperty Name="BooksInfo"
        Relationship="BooksAuthorsModel.FK_BookId"
        FromRole="Books" ToRole="BooksInfo" />
  </EntityType>
  <EntityType Name="BooksInfo">
    <Key>
      <PropertyRef Name="BookInfoId" />
    </Key>
    <Property Name="BookInfoId" Type="Guid" Nullable="false" />
    <Property Name="InfoLocator" Type="String" />
    <Property Name="AuthorLastName" Type="String" />
    <Property Name="BookTitle" Type="String" />
    <NavigationProperty Name="Authors" Relationship="BooksAuthorsModel.FK_AuthorId"
             FromRole="BooksInfo" ToRole="Authors" />
    <NavigationProperty Name="Books" Relationship="BooksAuthorsModel.FK_BookId"
                FromRole="BooksInfo" ToRole="Books" />
  </EntityType>
  <Association Name="FK_AuthorId">
    <End Role="Authors" Type="BooksAuthorsModel.Authors" Multiplicity="1" />
    <End Role="BooksInfo" Type="BooksAuthorsModel.BooksInfo"
           Multiplicity="*" />
  </Association>
  <Association Name="FK_BookId">
    <End Role="Books" Type="BooksAuthorsModel.Books" Multiplicity="1" />
    <End Role="BooksInfo" Type="BooksAuthorsModel.BooksInfo"
              Multiplicity="*" />
  </Association>
</Schema>

Metadati di archiviazione

Lo schema seguente definisce le strutture di archiviazione utilizzate dalle applicazioni compilate in base alle entità e alle associazioni definite nello schema precedente. I metadati di archiviazione sono specificati utilizzando il linguaggio SSDL (Store Schema Definition Language).

<?xml version="1.0" encoding="utf-8"?>
<Schema Namespace="BooksAuthorsModel.Store" Alias="Self"
    Provider="System.Data.SqlClient"
    ProviderManifestToken="2005"
    xmlns="https://schemas.microsoft.com/ado/2006/04/edm/ssdl">

  <EntityContainer Name="dbo">
    <EntitySet Name="Authors"
         EntityType="BooksAuthorsModel.Store.Authors" />
    <EntitySet Name="Books" EntityType="BooksAuthorsModel.Store.Books" />
    <EntitySet Name="BooksInfo"
              EntityType="BooksAuthorsModel.Store.BooksInfo" />
    <AssociationSet Name="FK_AuthorId"
             Association="BooksAuthorsModel.Store.FK_AuthorId">
      <End Role="Authors" EntitySet="Authors" />
      <End Role="BooksInfo" EntitySet="BooksInfo" />
    </AssociationSet>
    <AssociationSet Name="FK_BookId"
               Association="BooksAuthorsModel.Store.FK_BookId">
      <End Role="Books" EntitySet="Books" />
      <End Role="BooksInfo" EntitySet="BooksInfo" />
    </AssociationSet>
  </EntityContainer>
  <EntityType Name="Authors">
    <Key>
      <PropertyRef Name="AuthorId" />
    </Key>
    <Property Name="AuthorId" Type="uniqueidentifier" Nullable="false" />
    <Property Name="LastName" Type="nvarchar" 
                        Nullable="false" MaxLength="50" />
    <Property Name="FirstName" Type="nvarchar" MaxLength="50" />
  </EntityType>
  <EntityType Name="Books">
    <Key>
      <PropertyRef Name="BookId" />
    </Key>
    <Property Name="BookId" Type="nvarchar" 
                         Nullable="false" MaxLength="50" />
    <Property Name="Title" Type="nvarchar" 
                         Nullable="false" MaxLength="50" />
  </EntityType>
  <EntityType Name="BooksInfo">
    <Key>
      <PropertyRef Name="BookInfoId" />
    </Key>
    <Property Name="BookInfoId" Type="uniqueidentifier"
                   Nullable="false" />
    <Property Name="AuthorId" Type="uniqueidentifier"
                   Nullable="false" />
    <Property Name="BookId" Type="nvarchar" 
                   Nullable="false" MaxLength="50" />
    <Property Name="InfoLocator" Type="nvarchar(max)" />
    <Property Name="AuthorLastName" Type="nvarchar" 
                                       MaxLength="50" />
    <Property Name="BookTitle" Type="nvarchar" MaxLength="50" />
  </EntityType>
  <Association Name="FK_AuthorId">
    <End Role="Authors" Type="BooksAuthorsModel.Store.Authors"
                   Multiplicity="1" />
    <End Role="BooksInfo" Type="BooksAuthorsModel.Store.BooksInfo"
                   Multiplicity="*" />
    <ReferentialConstraint>
      <Principal Role="Authors">
        <PropertyRef Name="AuthorId" />
      </Principal>
      <Dependent Role="BooksInfo">
        <PropertyRef Name="AuthorId" />
      </Dependent>
    </ReferentialConstraint>
  </Association>
  <Association Name="FK_BookId">
    <End Role="Books" Type="BooksAuthorsModel.Store.Books"
                   Multiplicity="1" />
    <End Role="BooksInfo" Type="BooksAuthorsModel.Store.BooksInfo"
                   Multiplicity="*" />
    <ReferentialConstraint>
      <Principal Role="Books">
        <PropertyRef Name="BookId" />
      </Principal>
      <Dependent Role="BooksInfo">
        <PropertyRef Name="BookId" />
      </Dependent>
    </ReferentialConstraint>
  </Association>
</Schema>

Specifica di mapping

Nella sintassi seguente le entità e le associazioni definite nello schema CSDL vengono mappate ai metadati di archiviazione nello schema SSDL (Store Schema Definition Language). La specifica di mapping è scritta in MSL (Mapping Specification Language).

<?xml version="1.0" encoding="utf-8"?>
<Mapping Space="C-S" 
     xmlns="urn:schemas-microsoft-com:windows:storage:mapping:CS">
  <EntityContainerMapping StorageEntityContainer="dbo"
     CdmEntityContainer="BooksAuthorsEntities">
    <EntitySetMapping Name="Authors" StoreEntitySet="Authors"
            TypeName="BooksAuthorsModel.Authors">
      <ScalarProperty Name="AuthorId" ColumnName="AuthorId" />
      <ScalarProperty Name="LastName" ColumnName="LastName" />
      <ScalarProperty Name="FirstName" ColumnName="FirstName" />
    </EntitySetMapping>
    <EntitySetMapping Name="Books" StoreEntitySet="Books"
               TypeName="BooksAuthorsModel.Books">
      <ScalarProperty Name="BookId" ColumnName="BookId" />
      <ScalarProperty Name="Title" ColumnName="Title" />
    </EntitySetMapping>
    <EntitySetMapping Name="BooksInfo" StoreEntitySet="BooksInfo"
               TypeName="BooksAuthorsModel.BooksInfo">
      <ScalarProperty Name="BookInfoId" ColumnName="BookInfoId" />
      <ScalarProperty Name="InfoLocator" ColumnName="InfoLocator" />
      <ScalarProperty Name="AuthorLastName"
                           ColumnName="AuthorLastName"/>
      <ScalarProperty Name="BookTitle" ColumnName="BookTitle" />
    </EntitySetMapping>
    <AssociationSetMapping Name="FK_AuthorId"
          TypeName="BooksAuthorsModel.FK_AuthorId"
          StoreEntitySet="BooksInfo">
      <EndProperty Name="Authors">
        <ScalarProperty Name="AuthorId" ColumnName="AuthorId" />
      </EndProperty>
      <EndProperty Name="BooksInfo">
        <ScalarProperty Name="BookInfoId" ColumnName="BookInfoId" />
      </EndProperty>
      <Condition ColumnName="AuthorId" IsNull="false" />
    </AssociationSetMapping>
    <AssociationSetMapping Name="FK_BookId" TypeName="BooksAuthorsModel.FK_BookId" StoreEntitySet="BooksInfo">
      <EndProperty Name="Books">
        <ScalarProperty Name="BookId" ColumnName="BookId" />
      </EndProperty>
      <EndProperty Name="BooksInfo">
        <ScalarProperty Name="BookInfoId" ColumnName="BookInfoId" />
      </EndProperty>
      <Condition ColumnName="BookId" IsNull="false" />
    </AssociationSetMapping>
  </EntityContainerMapping>
</Mapping>

Lo script seguente può essere utilizzato per creare il database utilizzato in questo esempio. Per creare lo schema e il database BooksAuthors con SQL Server Management Studio:

Scegliere Nuovo dal menu File, quindi fare clic su Query del Motore di database.
Nella finestra di dialogo Connetti al Motore di database digitare localhost oppure il nome dell'istanza di SQL Server, quindi fare clic su Connetti.
Incollare lo script Transact-SQL seguente nella finestra di query, quindi fare clic su Esegui.

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

USE [master]
GO

IF EXISTS (SELECT * FROM sys.databases 
WHERE name = 'BooksAuthors')
DROP DATABASE BooksAuthors;
GO

-- Create the database.
CREATE DATABASE BooksAuthors;
GO

USE BooksAuthors;
GO

IF NOT EXISTS (SELECT * FROM sys.objects 
WHERE object_id = OBJECT_ID(N'[dbo].[Books]') 
AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[Books](
    [BookId] [nvarchar](50) NOT NULL,
     [Title] [nvarchar](50) NOT NULL,
 CONSTRAINT [PK_Book] PRIMARY KEY CLUSTERED 
(
     [BookId] ASC
)WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
END
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects 
WHERE object_id = OBJECT_ID(N'[dbo].[Authors]') 
AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[Authors](
     [AuthorId] [uniqueidentifier] NOT NULL,
     [LastName] [nvarchar](50) NOT NULL,
     [FirstName] [nvarchar](50) NULL,
 CONSTRAINT [PK_Author] PRIMARY KEY CLUSTERED 
(
     [AuthorId] ASC
)WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
END
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects 
WHERE object_id = OBJECT_ID(N'[dbo].[BooksInfo]') 
AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[BooksInfo](
     [BookInfoId] [uniqueidentifier] NOT NULL,
     [AuthorId] [uniqueidentifier] NOT NULL,
     [BookId] [nvarchar](50) NOT NULL,
     [InfoLocator] [nvarchar](max) NULL,
     [AuthorLastName] [nvarchar](50) NULL,
     [BookTitle] [nvarchar](50) NULL,
 CONSTRAINT [PK_BookInfo] PRIMARY KEY CLUSTERED 
(
     [BookInfoId] ASC
)WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
END
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys 
WHERE object_id = OBJECT_ID(N'[dbo].[FK_AuthorId]') 
AND parent_object_id = OBJECT_ID(N'[dbo].[BooksInfo]'))
ALTER TABLE [dbo].[BooksInfo]  
WITH CHECK ADD  CONSTRAINT [FK_AuthorId] FOREIGN KEY([AuthorId])
REFERENCES [dbo].[Authors] ([AuthorId])
GO
ALTER TABLE [dbo].[BooksInfo] CHECK CONSTRAINT [FK_AuthorId]
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys 
WHERE object_id = OBJECT_ID(N'[dbo].[FK_BookId]') 
AND parent_object_id = OBJECT_ID(N'[dbo].[BooksInfo]'))
ALTER TABLE [dbo].[BooksInfo]  
WITH CHECK ADD  CONSTRAINT [FK_BookId] FOREIGN KEY([BookId])
REFERENCES [dbo].[Books] ([BookId])
GO
ALTER TABLE [dbo].[BooksInfo] CHECK CONSTRAINT [FK_BookId]
GO

Use BooksAuthors
GO

INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-012-9', 'The Assembly of Gods')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-234-1', 'Know Yourself')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-345-2', 'Recall of the Histories of Troy')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-456-3', 'Meliador')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-567-4', 'History of the Kings of Britain')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-678-5', 'On the Division of Nature')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-765-1', 'The Voyage and Travels of Sir John Mandeville')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-876-0', 'Morte d’Arthur')
INSERT INTO dbo.Books(BookId, Title)
VALUES ('0-12345-890-7', 'The Book of Margery Kempe')


INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('2f19e43f-0107-4ba6-9210-41edbde7a0c9', 'Margery', 'Kempe')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('b0688878-9d4e-439a-9a67-46a2cada47b5', 'Jean', 'Froissart')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('61b5b894-56d0-4598-8181-4c36085b7a3a', 'John', 'Lydgate')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('b97dfb02-89be-43e4-8a7a-7195753f426e', 'John Scott', 'Erigena')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('642b2071-81a6-4292-964b-cbdfaf77999c', 'William', 'Caxton')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('194f6bb0-7b4a-4d83-836f-db60c45d5fd5', 'Thomas', 'Malory')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('413b9202-d9cb-4353-8d53-e889d367eb1a', 'William', 'Langland')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('8d9c5792-c651-423b-a412-f120dd89585c', 'Peter ', 'Abelard')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('0a921250-25cf-4d8e-8302-fe2d077d709b', 'Geoffrey of  ', 'Monmouth')
INSERT INTO dbo.Authors(AuthorId, FirstName, LastName)
VALUES ('cc0940ab-0990-4ee0-8567-fe71d62661b7', 'John', 'Mandeville')


INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('535a39fc-a339-4277-b682-65637d69548b', 'b0688878-9d4e-439a-9a67-46a2cada47b5', '0-12345-456-3', 'http://jeanfroissart.com', 'Froissart', 'Meliador')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('317cba6a-5736-497b-84be-6ba725a920b6', 'b97dfb02-89be-43e4-8a7a-7195753f426e', '0-12345-678-5', 'http://jserigena.com', 'Erigena', 'On the Division of Nature')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('d895f8f8-04bd-40f9-9478-72fbdb7d0b52', '61b5b894-56d0-4598-8181-4c36085b7a3a', '0-12345-012-9', 'http://assemblyofgods.com', 'Lydgate', 'The Assembly of Gods')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('2e734ee4-4e99-4be3-adf9-9366dc954840', '8d9c5792-c651-423b-a412-f120dd89585c', '0-12345-234-1', 'http://peterabelard.com', 'Abelard', 'Know Yourself')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('f8358150-7aef-49b5-97e2-9ea1cae703f4', '194f6bb0-7b4a-4d83-836f-db60c45d5fd5', '0-12345-876-0', 'http://mortedarthur.com', 'Malory', 'Morte d’Arthur')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('9cf29606-8bdb-43eb-918f-ae08307dd497', '0a921250-25cf-4d8e-8302-fe2d077d709b', '0-12345-567-4', 'http://GeoffreyofMonmouth.com', 'Monmouth', 'History of the Kings of Britain')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('64b4130f-867a-45cb-84a5-b4c21307afb4', 'cc0940ab-0990-4ee0-8567-fe71d62661b7', '0-12345-765-1', 'http://VoyageandTravels.com', 'Mandeville', 'The Voyage and Travels of Sir John Mandeville')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('4a3e00ea-e0d3-4bf6-8ee1-ba1e2b127799', '642b2071-81a6-4292-964b-cbdfaf77999c', '0-12345-345-2', 'http://wmcaxton.com', 'Caxton', 'Recall of the Histories of Troy')
INSERT INTO dbo.BooksInfo(BookInfoId, AuthorId, BookId, InfoLocator, AuthorLastName, BookTitle)
VALUES ('0dcf2550-1970-4d24-abe0-f61dbea089a1', '2f19e43f-0107-4ba6-9210-41edbde7a0c9', '0-12345-890-7', 'http://margerykempe.com', 'Kempe', 'The Book of Margery Kempe')

Vedere anche

Concetti

Servizio Web Books Authors (applicazione di esempio EDM)
Implementazione del servizio Web Books Authors (applicazione di esempio EDM)
Applicazione client per il servizio Web (applicazione di esempio EDM)

Altre risorse

Specifiche EDM
Specifica di schemi e mapping (Entity Framework)

Last updated on 2008-08-22