最后提出了生产部门进行地形图数据库增量更新的方案。
At last, the author prompts a scheme for surveying and mapping department to update relief map database with incremental mode.
但测绘部门建立的地形图数据库多为单纯的制图数据，虽然与GIS数据一样是矢量结构，却无法直接输入GIS以满足应用需要。
But most of topographical map database produced by survey department is only cartographic data, which is vector data structure, but cannot be imported into GIS directly to meet GIS using.
建立GIS数据库和编制地形图在生产实践中都具有重要意义，在生产中它们存在很大的相关性，但两者又有着非常明显的区别。
GIS database building and map making are of major importance in practical production. They are large correlation in production, although there are very obvious different between them.
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