摘要
基于对象关系数据库设计了一个移动对象的数据模型,查询语言和相应的数据库管理系统。此系统结合GIS数据库系统能够表述移动物体和支持对运动物体的查询,从而实现基于位置的服务。本系统支持不确定性和复杂可扩展的空间结构,最后描述了这个系统的执行与实现。
The moving objects DBMS based on OPDB was researched and designed. The system involved a data model, query language, database system for location-based service. Now, GIS was required to represent moving objects and to support querying on the motion properties of objects for location-based services. Such as advanced CRM applications may require to store and query the trajectories of mobile terminal users. But, the system design and processing motion-speclfic queries were challenging problem. A data model and data types for moving objects that includes complex evolving spatial structure and indeterminacy were defined, and then the system implementation was described.
出处
《计算机应用》
CSCD
北大核心
2006年第2期385-387,共3页
journal of Computer Applications
