摘要
Abstract
Geographic information database experienced from CAD, Coverage, Geodatabase. Geodatabase defines geographic information with a common model, and it can be used for different user to define or use professional application model, for all kinds of user. It also provides a powerful platform of definition, and supports for the vector data to face.关键词
地理信息数据库/模型/操作Key words
geographic information database/model/operation分类
天文与地球科学
