Based on deeply understanding of the research level at home and abroad and the architecture of the shared platform of heterogeneous databases , the author studies directory service technology , especially ldap ( lightweight directory access protocol ) , and then designs directory databases , provides a system framework of multi - directory databases including dic ( directory information collector ) of heterogeneous data , and then shows a one - time update policy to maintain the consistency of the data and directory and their copies according to the practice demand of the research task 作者认真了解国内外的研究现状以及异构信息共享平台的体系结构的基础上，深入研究目录服务技术特别是ldap （ lightweightdirectoryaccessprotocol ） v3 ，并根据本课题的实际需要，进行了目录数据库的设计，给出了多目录数据库的系统框架，包括异构数据的智能目录信息收集器dic ( directoryinformationcollector )的设计和分布式目录的分析，提出了一次性更新策略以实现数据和目录的主副本一致性问题。
Active directory application mode adam is a new mode of the active directory directory service that is designed to meet the needs of line - of - business applications that require a dedicated lightweight directory access protocol ldap data store , e - commerce applications that require simple ldap authentication support , and enterprise environments that require an application directory that is separate from their network operating system infrastructure directory Active directory应用程序模式( adam )是active directory目录服务的新模式，设计用于满足以下应用程序或环境的需要：需要专用轻型目录访问协议( ldap )数据存储的行业应用程序，需要简单ldap身份验证支持的电子商务应用程序，以及需要独立于网络操作系统( nos )结构目录的应用程序目录的企业环境。
The 3rd charpter mainly talks about ldap - a kind of directory access protocol , it is a very better way to solute distributed messages store . the 4 ' 1 " charpter discribes serveral concepts , such as : charset , encoding . in the end of this charpter , i presents the best solution for the confused code - utf - 8 . the last charpter , after analyzed the shortcoming of the old email system , i designs and achieve the webmail part of a email system by applying the serveral conceps mentioned above 第一章主要介绍电子邮件系统的基本概念和几个重要的协议；第二章主要介绍面向对象的概念、面向对象的语言java和数据交换格式xml 、以及平台无关的语言java加上与平台无关的数据xml的完美结合能够完成最为复杂且弹性最好的分布式应用；第三章主要介绍目录服务器及典型实例ldap ；第四章主要介绍字符集与乱码问题以及目前解决乱码问题最好的方式是utf - 8 ；第五章分析传统电子邮件的不足之处和当前商业电子邮件的需求，结合bluemail开发实例，对电子邮件系统的webmail部分进行了分析、设计和实际应用。
In this thesis , the components of the computing pool are designed based on globus platform . the service use ldap ( lightweight directory access protocol ) to realize the effective management , monitoring and control of the resources in the computing pool . the monitored information includes the cpu utilization rate , the free memory and the network status of the current node , . etc 论文所设计的计算池管理组件主要负责基于globus网格计算平台,应用ldap ( lightweightdirectoryaccessprotocol )实现对计算池资源的有效管理和监控,监控信息包括当前节点的cpu利用率、剩余内存以及网络状况等等。
This paper discusses the design and implementation of a distributed directory service in grid monitoring system . we first compare and analyze several directory service systems in grid environment , such as grid monitoring architecture , relational grid monitoring architecture , metacomputing directory service and monitoring and discovery service , as well as popular directory service protocols , such as lightweight directory access protocol . from those systems and protocols , design demands and functions can be achieved 本文比较分析了几个在网格环境中提供信息服务的目录服务系统及其标准,如网格监测体系结构、关系型网格监测体系结构、元计算目录服务和监测与发现服务,同时也介绍了当前较为流行的目录服务协议,如轻量级目录访问协议,得出一般目录服务应满足的要求和具备的功能,以及当前目录服务系统普遍存在的局限性。
