关键词: 本体, 服务数据对象, 数据交换, 面向服务的体系结构（SOA）, 自动机, 蚁群算法

Abstract: When using the SDO，there are always some problems，efficiency，consistency and so on.In order to solve the two problems by SDO while connecting the isomerous data source，an organon is raised which is grammar-oriented and automata theo-ry-oriented.The ontology is imported to describe the data exchange by semantic，and to enhance the SDO semantic analysis，and also a graphic structure is built up to access the isomerous data source by DMS.Because of the frequent alteration of the data graphic demands and the DAS，it’s required to cut out the data object to be the optimize trees，and then build up the mathematic matrix which would be optimized by the ant colony algorithm.At last，the policy mentioned above is used in the open source SDO API.It’s proved that the accessing to the data source has been improved a lot，and also the coherence and the semantics in data source are greatly enhanced too.

Key words: ontology, service data objects, data exchange, Service-Oriented Architecture（SOA）, automata, ant colony algorithm