错误:208 对象名'msdb.. backupset'无效 怎么修复哦

USE [msdb]
GO
/****** 对象:  Table [dbo].[backupset]    脚本日期: 09/02/2007 12:51:17 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[backupset](
[backup_set_id] [int] IDENTITY(1,1) NOT NULL,
[backup_set_uuid] [uniqueidentifier] NOT NULL,
[media_set_id] [int] NOT NULL,
[first_family_number] [tinyint] NULL,
[first_media_number] [smallint] NULL,
[last_family_number] [tinyint] NULL,
[last_media_number] [smallint] NULL,
[catalog_family_number] [tinyint] NULL,
[catalog_media_number] [smallint] NULL,
[position] [int] NULL,
[expiration_date] [datetime] NULL,
[software_vendor_id] [int] NULL,
[name] [nvarchar](128) NULL,
[description] [nvarchar](255) NULL,
[user_name] [nvarchar](128) NULL,
[software_major_version] [tinyint] NULL,
[software_minor_version] [tinyint] NULL,
[software_build_version] [smallint] NULL,
[time_zone] [smallint] NULL,
[mtf_minor_version] [tinyint] NULL,
[first_lsn] [numeric](25, 0) NULL,
[last_lsn] [numeric](25, 0) NULL,
[checkpoint_lsn] [numeric](25, 0) NULL,
[database_backup_lsn] [numeric](25, 0) NULL,
[database_creation_date] [datetime] NULL,
[backup_start_date] [datetime] NULL,
[backup_finish_date] [datetime] NULL,
[type] [char](1) NULL,
[sort_order] [smallint] NULL,
[code_page] [smallint] NULL,
[compatibility_level] [tinyint] NULL,
[database_version] [int] NULL,
[backup_size] [numeric](20, 0) NULL,
[database_name] [nvarchar](128) NULL,
[server_name] [nvarchar](128) NULL,
[machine_name] [nvarchar](128) NULL,
[flags] [int] NULL,
[unicode_locale] [int] NULL,
[unicode_compare_style] [int] NULL,
[collation_name] [nvarchar](128) NULL,
[is_password_protected] [bit] NULL,
[recovery_model] [nvarchar](60) NULL,
[has_bulk_logged_data] [bit] NULL,
[is_snapshot] [bit] NULL,
[is_readonly] [bit] NULL,
[is_single_user] [bit] NULL,
[has_backup_checksums] [bit] NULL,
[is_damaged] [bit] NULL,
[begins_log_chain] [bit] NULL,
[has_incomplete_metadata] [bit] NULL,
[is_force_offline] [bit] NULL,
[is_copy_only] [bit] NULL,
[first_recovery_fork_guid] [uniqueidentifier] NULL,
[last_recovery_fork_guid] [uniqueidentifier] NULL,
[fork_point_lsn] [numeric](25, 0) NULL,
[database_guid] [uniqueidentifier] NULL,
[family_guid] [uniqueidentifier] NULL,
[differential_base_lsn] [numeric](25, 0) NULL,
[differential_base_guid] [uniqueidentifier] NULL,
PRIMARY KEY CLUSTERED 
(
[backup_set_id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]GO
SET ANSI_PADDING OFF
GO/****** 对象:  Index [backupsetuuid]    脚本日期: 09/02/2007 12:51:18 ******/
CREATE NONCLUSTERED INDEX [backupsetuuid] ON [dbo].[backupset] 
(
[backup_set_uuid] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO
ALTER TABLE [dbo].[backupset]  WITH CHECK ADD FOREIGN KEY([media_set_id])
REFERENCES [dbo].[backupmediaset] ([media_set_id])