GIS is a concentrative system including computing science, geographic database system, and development of application system.

地理数据库系统和应用开发为一体的高技术体系。

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This paper mostly introduce three issues of Vehicle Navigation System, that are navigation geographic database standard, data structure and data model, superior road.

本文主要介绍了汽车导航系统中的导航地理数据库标准、数据结构与数据模型、最优路径三个问题。

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Relying on database and geographic data engine discusses and designs the organization and management of multi-source data in digital map publishing system.

以数据库为依托，借助地理数据引擎，探讨并设计了对多源数据在数字地图出版系统中组织及管理；

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The plan also includes innovative tactics and cutting-edge tools, like geographic information-system maps that combine cartography and database technology to help locate children who have not been reached by vaccinators.

WSJ: Bill Gates and Michael Bloomberg: Our Plan to Eradicate Polio

The Ocean Biogeographic Information System (OBIS) is an open, online database and tool on the biodiversity, geographic distribution and abundance of marine life.

UNESCO: MEDIA SERVICES