方案实现的核心技术是基于LDAP的目录服务技术。

The core technology is directory server based on LDAP.

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由于分布式数据库系统不能满足PK I安全体系结构的要求，我们采用目录服务技术来为其实现证书、证书作废列表的存储管理。

Because the DBS cannot meet the requirement of PKI, we use the Directory Service technology to implement the administration of Certificate and Certificate Revocation List for PKI system.

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总的来说，本文的工作就是利用目录服务技术对用户管理系统进行设计和实现，使用户管理系统能够满足企业的数据集成与应用整合的需要。

All in all, this essay worked out a new design of user management system by researching directory service technology. This design can content user management to multi-system environment.

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