To make full use of the data resource, a hierarchy architecture of massive data management system based on Grid is proposed, which consists of Metadata Catalog and Access Broker.
为了充分利用已有的数据资源，我们借鉴网格中的数据管理技术，提出使用元数据目录与访问代理相结合来管理分布式虚拟环境中数据的方法。
The RBAC solves the authorized management problems of the systems, which have massive users, data objects and all kinds of access jurisdictions.
RBAC解决了具有大量用户、数据客体和各种访问权限的系统中的授权管理问题。
The geographical information system (GIS), which contains massive information on basic data, is an inalienable part of the distribution network management system.
地理信息系统（GIS）包含大量基础数据信息，是电力配电网管理系统不可分割的部分。
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