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对数据库管理系统（DBMS）、地理信息系统（GIS）、计算机辅助图件编绘系统（CADS）三者的技术特性与相关性加以分析，结合三峡坝区工程地质信息特点，展示了“3S”技术在空间信息一体化管理中的作用．研究成果表明：对具有较高性能价格比的DBMS，GIS及CADS进行二次集成开发，所构成的系统对数据具有快速采集、实时更新、图文一体化管理和图件辅助编绘功能，为工程勘察和施工技术的提高及施工周期的缩短提供了科学的方法.
This paper analyzes the technical characteristics and correlations of the database management system (DBMS), geographic information system (GIS) and computer aided mapping system (CADS). Combining the characteristics of engineering geological information in the Three Gorges Dam area, The Role of Technology in the Integrated Management of Spatial Information. The results of the research show that the system integrates DBMS, GIS and CADS with high performance-price ratio for the second time. The system has the functions of fast data collection, real-time update, integrated graphic and text management, The improvement of engineering investigation and construction technology and the shortening of construction period provide a scientific method.