论文在自主开发的空间数据库VISTA的基础上针对特定的对象-关系型数据结构，提出了相应的访问控制方法。
This paper describes the access control method for the specific relational-object data structure on the base of the self-developed spatial database, VISTA.
空间数据库的分布式体系结构一直是理论研究的热点和工程实践必须面对的问题。
The system structure distributed in spatial database is always the focus of theoretical research and the problem that projects must face.
结论所设计的空间数据库总体框架结构合理，技术路线正确，可行性强。
ConclusionThe results indicate that the designed total frame in a database construction could be reasonable, the technique route could be right, the possibility could be strong.
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