GIS客户数据库更新的基本问题

GIS客户数据库更新是目前空间数据生产者和使用者共同关注的热点问题之一。该问题的成功解决不仅可以提高客户数据库的更新效率,缩短更新周期,降低更新成本,而且可以强化数据生产者的服务能力,增加主数据库的应用价值,同时也顺应了数据共享的时代要求。本文首先阐述GIS客户数据库更新的概念含义和基本实施方式,然后针对更新实施过程中的变化捕捉、增量建模、数据异构、更新集成、软件平台、政策标准等问题的主要解决方法和当前研究现状展开论述。

Basic Issues for GIS Client Database Updating

GIS client database updating is one of issues which are being focused on collectively by producers and users of spatial data. Its successful resolution can not only improve updating efficiency,shorten updating cycle and reduce updating cost,but also enhance the service ability of data producers,increase the application value of master database,at the same time also acclimate the era requirement of data sharing. The definition and basic implementing approaches of GIS client database updating is firstly explained,and then the basic issues during the process of updating implementation such as change capture,delta modeling,data heterogeneity,updating integration,software platform,and policy standard are discussed.