异构地理数据共享模式与关键技术研究

摘要

从介绍异构地理数据的特点出发,详细论述了直接使用模式、先转换后使用模式、数据互操作模式、数据标准化模式和元数据库访问模式等5种异构地理数据共享模式及其弊端,在此基础上进一步阐述了异构地理数据共享模式实现的关键技术,即分布式数据库集成技术、信息压缩传输与快速索引技术和实时投影转换技术,为异构地理数据集成共享提供了参考性的建议、实施途径和方法.%The heterogeneous geographical information has been demanded widely by different strata of users. Based on its characteristics, five integrated share modes are discussed here, including Directly Use Mode, Conversion-Use Mode, Interoperability Mode, Standardization Mode and Metadata Access Mode. Their shortcomings are also touched. At the same time, the key technologies for implementing the integrated share of heterogeneous geographical data are enunciated. They are distributed database integrated technology , compressed data transmission & Rapid index technology and projection conversion technology. These technologies can provide referential suggestions, ways and methods for implementation.