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地质图空间数据库建库通过野外手图数据库、图幅PRB数据库、图幅实际材料图数据库、图幅剖面数据库不同阶段数据互通、继承、提取和凝练而形成。其核心是采用在关系数据库理论的基础上,增加了面向对象特性,把面向对象技术与关系理论结合的地质图空间数据建模技术,使面向对象的数据可在关系数据库中存储表达,又克服了关系数据库太简单的缺点。通过云南省叶枝-依陇1:5万地质图空间数据库建库实践,阐述了数字地质调查系统地质图空间数据库制作方法流程,分析了地质图空间数据建模技术的实际应用问题。
Geological map spatial database construction database through the field of hand map database, map PRB database, map the actual material map database, map profile database at different stages of data exchange, inheritance, extraction and condensation formed. The core of this method is to use the geo-graph spatial data modeling technology which is based on the theory of relational database and adds object-oriented features and combines object-oriented technology and relational theory so that the object-oriented data can be stored and expressed in the relational database and overcome The relational database is too simple shortcomings. Through the practice of 1: 50000 geological map spatial database construction in Yezhi - Yilong of Yunnan Province, this paper elaborates the flow of the method of producing the geological database of the digital geological survey system, and analyzes the practical application of the geospatial spatial data modeling technology.