如果返回SQL 1060n，请验证用户确实具有连接联合数据库的权限。
If SQL1060N is returned, verify that the user indeed has connect privileges to the federated database.
由于用户在登录和验证权限，处理开销使成本增加。
Because users are logging in and validating their authorization, the processing overhead is associated with this elevated cost.
如果您具有认证，则需要对访问资源的用户进行认证以验证他们是否有访问的权利和权限。
If you have Authentication, then the user accessing a resource needs to be authenticated with rights and permissions to have access.
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