地质灾害信息系统的数据准备及数据库设计

数据是构建地质灾害信息系统的重要内容与基础。本着数据来源真实可靠、数据标准、依据充分、数据组织层次清楚的设计思想，论述了数据的采集、整理、标准化、编码及数据库设计。列举了所引用的数据标准，建立了数据项编码原则和系统，并进行了空间信息要素层的划分。此外，还论述了地质灾害数据库结构设计、库表的组成及其逻辑关系。

Data preparation and database design for information system on geological disaster

Geological data is a pivotal part and base to construct the geological disaster information system.According to the scheme idea of true and reliable data source,permissive data standard basis and clear data organization arrangement,this article has discussed on data's collection,settlement,standard,coding and data base programming.It has enumerated the cited data standard,established data term coding principle and system.It has also plotted out the vacuum information layer.In addition,the construction programming of geological disaster data base,the constitution of data base's forms and logical relations have been discussed.