If no user account exists in a database for a specific login, the user that is using that login cannot access the database even though the user may be able to connect to the SQL server server.
如果数据库中不存在针对特定登录的用户帐户，使用该登录的用户即使能够连接到SQLServer服务器，也无法访问数据库。
For instance, a Rational Team Concert 1.0 or later client cannot connect to a Rational Team Concert 2.0 or later server, nor the reverse.
例如，RationalTeamConcert 1.0或者后续的客户端版本不能连接至Rational Team Concert 2.0或者后续版本的服务器，反过来也不行。
Cannot connect to the proxy server. Contact your network administrator.
无法连接到代理服务器。请与网络管理员联系。
Cannot connect to the proxy server. Contact your network administrator.
无法连接到代理服务器。请与网络管理员联系。
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