期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2000
卷号：XXXIII Part B4 (/1-3)
页码：88-95
出版社：Copernicus Publications
摘要：This article describes the Querytool, a platform for querying multiple geographic data sets and associated thematic (legal)data available at the Cadastre in one integrated system. The system is nationwide and available for analyzing and performingconsistency checks on the Cadastral data. It is designed to support ad hoc queries covering both the spatial andthe thematic part of the data. The system is based on two important components: a relational DBMS and a (geo)graphicuser interface for comfortable query formulation and showing the results. The usefulness of the tool, is shown by threequite different (implemented) cases from the real world, each illustrating different aspects of the system. These applicationsare based, among others, on the following generic concepts: spatial aggregates, historic spatial data, spatial join,integrated geometric and thematic data, SQL and shell scripts, using external spatial data, and spatial joins involvingtopologically structured data. As the relational DBMS can not execute the spatial join with topologically structured data,this is implemented in the (geo)graphic user interface.
关键词：Query; Spatio-temporal; Integration; Data aggregation; User interfaces
