【摘要】 shapefile格式的电子海图数据通常采用文件系统存储,难以保证数据的安全性、一致性、完整性,且数据访问效率低。本文在认真分析shapefile格式的电子海图数据组织结构基础上,研究并提出了电子海图空间数据与属性数据集成存储的方法,设计了集成存储电子海图数据的空间数据库结构,并以Oracle数据库为平台在Visual C++环境下实现了空间数据与属性数据的集成,有效地解决了文件系统存储海图数据的弊端。更多还原

【Abstract】 The electronic chart data of shapefile format usually was stored in the file system which was difficult to ensure security, consistency, integrality of data, and the efficiency of accessing data was low. Based on seriously analyzing the organizing structure of electronic chart data of shapefile format, the method of storing integrated electronic chart spatial data and attribute data was discussed and put forward, and the spatial database integrated storage structure was finally designed in this paper. The integrated storage of spatial data and attribute data was implemented in Oracle database with VC++. It effectively solves the drawbacks of electronic chart data in file system.更多还原