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问题 I logged into SQL Server 2008 via SQL Server Management Studio using Windows admin account. When I run the command ( ALTER LOGIN sa ENABLE ) I get the following error. Cannot alter the login 'sa', because it does not exist or you do not have permission. 回答1: You account doesn't have permissions. It isn't sysadmin. CREATE DATABASE requires Requires CREATE DATABASE, CREATE ANY DATABASE, or ALTER ANY DATABASE permission. This is (legacy SQL Server 2000 lingo): sysadmin dbcreator If the account

问题 I\'m developing a simple C# application, I\'d like to know this: When I connect my application to SQL Server on my PC, I know the connection string (server name, password etc.), but when I connect it to another PC, the SQL Server connection string is different. Is there a common account in SQL Server that come with default account that can connect? I have heard about sa account in SQL Server, what is sa ? 回答1: // .NET DataProvider -- Standard Connection with username and password using System