用BLOB类型存取二进制地图数据

Access Binary Map Data with BLOB

随着测量技术的发展,卫星、遥感、航空摄影等新手段不断引入,以地图为基础的地理数据得以迅速增长,如何更好地存储和管理海量的地理数据显得日益重要。文中就矢量地图数据的存储问题进行了一些探讨,介绍了以二进制大对象BLOB存取矢量地图数据的方法,以Oracle9i为例,分析了以BLOB存取矢量二进制数据的基本过程和若干问题。

With the development of technology, the quantity of geographical data based on the map is increasing quickly.How to store and manage these data more effectively is an important problem.This paper introduces a method to store vector map data with BLOB.It shows an example to store and get binary data from database with BLOB in Oracle 9i.