附加后发明数据库属性为只读 解决办法
1、打开 sql server 配置管理器， 打开 SQL Server2005服务-》 SQL Server （SQLEXPRESS） 的属性.在内置帐号处，把网络服务改成本地系统，从头启动 SQL Server 2005 Express 后，再附加数据库一切正常。 2、打开SqlServer 2005 ，在只读的数据库上右击选择
1、打开 sql server 配置管理器， 打开SQL Server2005服务-》SQL Server （SQLEXPRESS） 的属性.在内置帐号处，把“网络服务”改成“本地系统”，从头启动SQL Server 2005 Express 后，再附加数据库一切正常。
2、打开SqlServer 2005 ，在只读的数据库上右击选择属性，选中属性窗口左边"选择页"下面的"选项"，在窗口右边将“数据库为只读”改为false ，点击确定即可。
总结：之所以附加上的数据库为“只读”，是因为启动SQL Server 的默认的启动帐号“网络服务”对所附加（Attach）的数据库文件的权限不符合造成的。
另外
“无法打开物理文件 "E:\works\database\northwnd\northwnd.mdf"。操纵体系错误 5:"5（拒绝接见。）"。 （Microsoft SQL Server，错误: 5120）”这个问题的解决方法也差不多，只要内置帐户选择"Local System"，点击从头启动就OK了
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