In addition, this technology helps the maintenance and management of the system spatial database, and keeps the system space attribute data current.

另外，该技术还有利于系统空间数据库的维护和管理，保持系统空间数据的现时性。

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Spatial data Grid derived from data Grid. In the dissertation, the key technology of Spatial data Grid, including metadata catalog, data broker and Grid Spatial Database are studied.

空间数据网格来源于数据网格，本文对它的关键技术-元数据目录、数据代理和网格空间数据库进行了探讨研究。

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With the combination of database technology and GIS application, the method of manage spatial data using object relational database technology will be the currently tendency.

随着目前数据库技术与GIS应用的结合，采用对象关系数据库来管理空间数据已表现出强大的生命力。

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