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shared access中文是什么意思

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  • This paper stresses on discussing the architecture , access protocol and implementation mechanism based on xml and web services technologies , researches key technologies of metadata information service and data uniform access and management in database grid , designs and implements distributed mis subsystem and das subsystem , which support multi - domain management . mis can provides metadata information for the whole system , such as das and clients , it uses domain name 、 logical name and internal name of data object to uniformly name database resources in grid and implements name mapping mechanism and user view metadata information service and provides virtual organization and management of database resources . das can provide a scalable uniform data access by virtual organization and management of storage resources and multi - mode data share access mechanism , thus integrate database resources in grid and shields distribution and heterogeneity of resources and achieves transparent access . system adopts data access mechanism based on user request mapping to flexibly implement data access across multi domains , and adopts distributed data cache mechanism 、 security mechanism based gsi to provide high - performance secure data service for grid users
    本文论述了griddaen - dai系统的逻辑结构、访问协议、数据服务流程以及基于webservices 、 xml等技术的实现策略,重点研究数据库网格中的元服务、数据统一访问和管理等关键技术,设计和实现了支持多管理域的分布式元服务子系统和数据访问服务子系统。其中元服务主要为整个系统提供各种元信息支持,它采用域名、数据对象的逻辑名称、物理名称和内部名称对广域环境下的数据库数据进行了统一命名,实现了相应的名字映射机制和全局的用户数据视图服务,提供了数据库资源的虚拟组织与管理方式;数据访问服务通过提供可扩展的统一数据访问和支持多种数据共享访问模式,屏蔽了数据库资源的分布性和异构性,为用户提供了统一透明的数据服务。
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Last modified time:Tue, 19 Aug 2025 00:29:56 GMT

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