The spatial database model and the new map management manner can extend to the other fields.
这种数据库结构模型和图层与块相结合的地图管理方式易于扩展到其他领域。
Layer based spatial database model is widely used now, which consequently causes some difficult problems.
目前普遍使用的基于图层的空间数据库模型存在许多问题。
Layer based spatial database model is widely used now, which consequently causes some difficult problems.
目前普遍使用的基于图层的空间数据库模型存在许多问题。
应用推荐