This paper introduces the concepts and theory of SDE(spatial data engineer), and presents some key technologies, such as the model of SDE, the efficiency of SDE, data consist of multi-user edit, etc.

• 介绍了空间数据引擎的概念和原理，剖析了空间数据模型、引擎效率、多用户编辑的数据一致性、多数据源支持等空间数据引擎的关键技术。