.EDMX
ファイルを右クリックしてをクリックGenerate Database From Model
すると、テーブル名が原因で結果のスクリプトが明らかに間違っています。生成されるのは次のスクリプトです。DROP TABLE
パーツとパーツのテーブル名に注意してくださいCREATE TABLE
。
なぜこれが一貫していないのですか?
これは明らかに再利用可能なスクリプトではありません。私が作成したのは、「住所」という名前のエンティティと「会社」という名前のエンティティなどです(すべて単数)。EntitySet 名は複数形です。「Pluralize New Objects」ブール値もこれを変更しません。それで、取引は何ですか?
価値があるのは、最初に、複数形化されていない名前のテーブルを持つデータベースを指すことで EDMX を生成したことです。いくつかの変更を加えたので、逆に戻りたいと思います。db-first モデルも model-first モデルもすべてのシナリオで理想的ではないため、前後に移動するオプションが必要です。また、複数の人が両方を使用することによるマージの問題がないように制御できます。同時に方法。
-- --------------------------------------------------
-- Dropping existing FOREIGN KEY constraints
-- NOTE: if the constraint does not exist, an ignorable error will be reported.
-- --------------------------------------------------
ALTER TABLE [Address] DROP CONSTRAINT [FK_Address_StateID-State_ID];
GO
ALTER TABLE [Company] DROP CONSTRAINT [FK_Company_AddressID-Address_ID];
GO
ALTER TABLE [Employee] DROP CONSTRAINT [FK_Employee_BossEmployeeID-Employee_ID];
GO
ALTER TABLE [Employee] DROP CONSTRAINT [FK_Employee_CompanyID-Company_ID];
GO
ALTER TABLE [Employee] DROP CONSTRAINT [FK_Employee_PersonID-Person_ID];
GO
ALTER TABLE [Person] DROP CONSTRAINT [FK_Person_AddressID-Address_ID];
GO
-- --------------------------------------------------
-- Dropping existing tables
-- NOTE: if the table does not exist, an ignorable error will be reported.
-- --------------------------------------------------
DROP TABLE [Address];
GO
DROP TABLE [Company];
GO
DROP TABLE [Employee];
GO
DROP TABLE [Person];
GO
DROP TABLE [State];
GO
-- --------------------------------------------------
-- Creating all tables
-- --------------------------------------------------
-- Creating table 'Addresses'
CREATE TABLE [Addresses] (
[ID] int IDENTITY(1,1) NOT NULL,
[StreetAddress] nvarchar(100) NOT NULL,
[City] nvarchar(100) NOT NULL,
[StateID] int NOT NULL,
[Zip] nvarchar(10) NOT NULL
);
GO
-- Creating table 'Companies'
CREATE TABLE [Companies] (
[ID] int IDENTITY(1,1) NOT NULL,
[Name] nvarchar(100) NOT NULL,
[AddressID] int NOT NULL
);
GO
-- Creating table 'People'
CREATE TABLE [People] (
[ID] int IDENTITY(1,1) NOT NULL,
[FirstName] nvarchar(100) NOT NULL,
[LastName] nvarchar(100) NOT NULL,
[AddressID] int NOT NULL
);
GO
-- Creating table 'States'
CREATE TABLE [States] (
[ID] int IDENTITY(1,1) NOT NULL,
[Name] nvarchar(100) NOT NULL,
[Abbreviation] nvarchar(2) NOT NULL
);
GO
-- Creating table 'Employees'
CREATE TABLE [Employees] (
[ID] int IDENTITY(1,1) NOT NULL,
[PersonID] int NOT NULL,
[CompanyID] int NOT NULL,
[Position] nvarchar(100) NOT NULL,
[BossEmployeeID] int NULL
);
GO
-- --------------------------------------------------
-- Creating all PRIMARY KEY constraints
-- --------------------------------------------------
-- Creating primary key on [ID] in table 'Addresses'
ALTER TABLE [Addresses]
ADD CONSTRAINT [PK_Addresses]
PRIMARY KEY ([ID] );
GO
-- Creating primary key on [ID] in table 'Companies'
ALTER TABLE [Companies]
ADD CONSTRAINT [PK_Companies]
PRIMARY KEY ([ID] );
GO
-- Creating primary key on [ID] in table 'People'
ALTER TABLE [People]
ADD CONSTRAINT [PK_People]
PRIMARY KEY ([ID] );
GO
-- Creating primary key on [ID] in table 'States'
ALTER TABLE [States]
ADD CONSTRAINT [PK_States]
PRIMARY KEY ([ID] );
GO
-- Creating primary key on [ID] in table 'Employees'
ALTER TABLE [Employees]
ADD CONSTRAINT [PK_Employees]
PRIMARY KEY ([ID] );
GO
-- --------------------------------------------------
-- Creating all FOREIGN KEY constraints
-- --------------------------------------------------
-- Creating foreign key on [StateID] in table 'Addresses'
ALTER TABLE [Addresses]
ADD CONSTRAINT [FK_Address_StateID_State_ID]
FOREIGN KEY ([StateID])
REFERENCES [States]
([ID])
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Creating non-clustered index for FOREIGN KEY 'FK_Address_StateID_State_ID'
CREATE INDEX [IX_FK_Address_StateID_State_ID]
ON [Addresses]
([StateID]);
GO
-- Creating foreign key on [AddressID] in table 'Companies'
ALTER TABLE [Companies]
ADD CONSTRAINT [FK_Company_AddressID_Address_ID]
FOREIGN KEY ([AddressID])
REFERENCES [Addresses]
([ID])
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Creating non-clustered index for FOREIGN KEY 'FK_Company_AddressID_Address_ID'
CREATE INDEX [IX_FK_Company_AddressID_Address_ID]
ON [Companies]
([AddressID]);
GO
-- Creating foreign key on [AddressID] in table 'People'
ALTER TABLE [People]
ADD CONSTRAINT [FK_Person_AddressID_Address_ID]
FOREIGN KEY ([AddressID])
REFERENCES [Addresses]
([ID])
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Creating non-clustered index for FOREIGN KEY 'FK_Person_AddressID_Address_ID'
CREATE INDEX [IX_FK_Person_AddressID_Address_ID]
ON [People]
([AddressID]);
GO
-- Creating foreign key on [CompanyID] in table 'Employees'
ALTER TABLE [Employees]
ADD CONSTRAINT [FK_Employee_CompanyID_Company_ID]
FOREIGN KEY ([CompanyID])
REFERENCES [Companies]
([ID])
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Creating non-clustered index for FOREIGN KEY 'FK_Employee_CompanyID_Company_ID'
CREATE INDEX [IX_FK_Employee_CompanyID_Company_ID]
ON [Employees]
([CompanyID]);
GO
-- Creating foreign key on [BossEmployeeID] in table 'Employees'
ALTER TABLE [Employees]
ADD CONSTRAINT [FK_Employee_BossEmployeeID_Employee_ID]
FOREIGN KEY ([BossEmployeeID])
REFERENCES [Employees]
([ID])
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Creating non-clustered index for FOREIGN KEY 'FK_Employee_BossEmployeeID_Employee_ID'
CREATE INDEX [IX_FK_Employee_BossEmployeeID_Employee_ID]
ON [Employees]
([BossEmployeeID]);
GO
-- Creating foreign key on [PersonID] in table 'Employees'
ALTER TABLE [Employees]
ADD CONSTRAINT [FK_Employee_PersonID_Person_ID]
FOREIGN KEY ([PersonID])
REFERENCES [People]
([ID])
ON DELETE NO ACTION ON UPDATE NO ACTION;
-- Creating non-clustered index for FOREIGN KEY 'FK_Employee_PersonID_Person_ID'
CREATE INDEX [IX_FK_Employee_PersonID_Person_ID]
ON [Employees]
([PersonID]);
GO
-- --------------------------------------------------
-- Script has ended
-- --------------------------------------------------