您必须“签名”，这样数据库才能确认您的身份，数据库也能清楚的知道您的权限有哪些。通常需要通过用户名和密码来验证。
You must sign-on, so that you are identified and the database clearly knows what you are allowed to do. Usually, you will provide a username and a password.
您必须“签名”，这样数据库才能确认您的身份，数据库也能清楚的知道您的权限有哪些。通常需要通过用户名和密码来验证。
You must sign-on, so that you are identified and the database clearly knows what you are allowed to do. Usually, you will provide a username and a password.
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