我没有突出显示连接"按钮，并且服务器名称"文本框为空.
由于未指定服务器名称，因此未突出显示/启用连接按钮.

我该怎么做才能连接到数据库?
在服务器中提供数据库服务器名称.然后提供连接凭据.立即尝试连接.

I don''t get the Connect button highlighted, and the Server name text box is empty.
Since there is no server name specified, the connect button is not highlighted/enabled.

What should I do in order to connect to a database?
Provide the database server name in the server. Then provide the connection crendetials. Try to connect now.