当用户登录时，LDAP客户端向LDAP服务器发送一个查询，以便从集中式的数据库中获取这个用户和组的信息。

When users log in, the LDAP client sends a query to the LDAP server to get the user and group information from the centralized database.

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然后应用程序必须解析和查询 XML 消息以获得需要发送给用户或报告工具的信息。

The application then has to parse and query the XML message to obtain just the information needed to send to the user or report tool.

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另外，被发送到远程数据源的查询由执行层根据缓存内容和高级空抑制逻辑进行进一步优化。

In addition the queries which are sent to remote data sources are further optimized by the execution layer based on cache content and advanced null suppression logic.

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