Обработка баз данных на Visual Basic®.NET

Прайс Кевин Т.

drop table [dbo].[tblEmployee]

GO

/****** Object: Table [dbo].[tblInventory] Script Date: 10-Jul-02 12:41:09 PM ******/

if exists (select * from dbo.sysobjects where id = object_id(N' [dbo].[tblInventory]')

and OBJECTPROPERTY(id, N'IsUserTable') = 1)

drop table [dbo].[tblInventory]

GO

/****** Object: Table [dbo].[tblOrder] Script Date: 10-Jul-02 12:41:09 PM ******/

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tblOrder]')

and OBJECTPROPERTY(id, N'IsUserTable') = 1)

drop table [dbo].[tblOrder]

GO

/****** object: Table [dbo].[tblOrderItem] Script Date: 10-Jul-02 12:41:09 PM ******/

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tblOrderItem]')

and OBJECTPROPERTY(id, N'IsUserTable') = 1)

drop table [dbo].[tblOrderltem]

GO

/****** object: Table [dbo].[tblRegion] Script Date: 10-Jul-02 12:41:09 PM ******/

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tblRegion]')

and OBJECTPROPERTY(id, N'IsUserTable') = 1)

drop table [dbo].[tblRegion]

GO

Теперь

можно приступать к созданию новых объектов базы данных. Начнем с создания таблиц; сценарий этих операций приведен в листинге 3.4.

Листинг 3.4. Сценарий создания таблиц базы данных Novelty

/****** Object: Table [dbo].[tblCustomer] Script Date: 10-Jul-02 12:41:10 PM ******/

CREATE TABLE [dbo].[tblCustomer] (

 [ID] [int] IDENTITY (1, 1) NOT NULL,

 [FirstName] [varchar] (20) COLLATE Latin1_General_CI_AI NULL,

 [LastName] [varchar] (30) COLLATE Latinl_General_CI_AI NULL,

 [Company] [varchar] (50) COLLATE Latin1_General_CI_AI NULL,

 [Address] [varchar] (50) COLLATE Latin1_General_CI_AI NULL,

 [City] [varchar] (30) COLLATE Latin1_General_CI_AI_NULL,

 [State] [char] (2) COLLATE Latin1_General_CI_AI_NULL,

 [PostalCode] [varchar] (9) COLLATE Latin1_General_CI_AI NULL,

 [Phone] [varchar] (15) COLLATE Latinl_General_CI_AI NULL,

 [Fax] [varchar] (15) COLLATE Latinl_General_CI_AI NULL,

 [Email] [varchar] (100) COLLATE Latinl_General_CI_AI NULL,

 [LastNameSoundex] [varchar] (4) COLLATE Latinl_General_CI_AI NULL

) ON [PRIMARY]

GO

/****** object: Table [dbo].[tblDepartment] Script Date: 10-Jul-02 12:41:11 PM ******/

CREATE TABLE [dbo].[tblDepartment] (

 [ID] [int] IDENTITY (1, 1) NOT NULL,

 [DepartmentName] [varchar] (75) COLLATE Latin1_General_CI_AI NOT NULL

) ON [PRIMARY]

GO

/****** Object: Table [dbo].[tblEmployee] Script Date: 10-Jul-02 12:41:11 PM ******/

CREATE TABLE [dbo].[tblEmployee] (

 [ID] [int] IDENTITY (1, 1) NOT NULL,

 [FirstName] [varchar] (50) COLLATE Latin1_General_CI_AI NOT NULL,

 [LastName] [varchar] (70) COLLATE Latin1_General_CI_AI NOT NULL,

 [DepartmentID] [int] NULL,

 [Salary] [money] NULL

) ON [PRIMARY]

GO

/****** object: Table [dbo]. [tblInventory] Script Date: 10-Jul-02 12:41:11 PM ******/

CREATE TABLE [dbo].[tblInventory] (

 [ID] [int] IDENTITY (1, 1) NOT NULL,

 [ProductName] [varchar] (75) COLLATE Latin1_General_CI_AI NOT NULL

 [WholesalePrice] [money] NULL,

 [RetailPrice] [money] NULL,

 [Description] [ntext] COLLATE Latin1_General_CI_AI NULL

) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO

/****** object: Table [dbo].[tblOrder] Script Date: 10-Jul-02 12:41:12 PM ******/

CREATE TABLE [dbo].[tblOrder] (

 [ID] [int] IDENTITY (1, 1) NOT NULL,

 [CustomerlD] [int] NULL,

 [OrderDate] [datetime] NULL,

 [Amount] [money] NULL

) ON [PRIMARY]

GO

/****** object: Table [dbo].[tblOrderItem] Script Date: 10-Jul-02 12:41:12 PM ******/

CREATE TABLE] (

 [ID] [int] IDENTITY (1, 1) NOT NULL, [OrderID] [int] NOT NULL,

 [int] NOT NULL, [Quantity] [int] NULL,

 [Cost] [money] NULL

) ON [PRIMARY]

GO

/******* object: Table [dbo].[tblRegion] Script Date: 10-Jul -02 12:41:12 PM *******/

CREATE TABLE [dbo]. [tblRegion] (

 [ID] [int] IDENTITY (1, 1) NOT NULL,

 [State] [char] (2) COLLATE Latin1_General_CI_AI NOT NULL,