面向服务架构的数据服务在数据访问中的应用  

Research and application of data service for data acquisition in SOA

作　　者：蔡海尼[1,2] 何盼[2] 文俊浩[1,2] 桑春艳[2] 

机构地区：[1]重庆大学软件学院,重庆400030 [2]重庆大学计算机学院,重庆400030

出　　处：《重庆大学学报（自然科学版）》2009年第10期1208-1213,共6页Journal of Chongqing University

基　　金：国家支撑计划重点资助项目(2007BAF23B0302)

摘　　要：虽然面向服务架构(SOA)具有跨平台、松耦合等特性,但其并不支持异构数据源直接访问及处理。为了在数据访问中减少对应用程序的依赖,采用数据服务初步实现了面向服务架构的数据访问机制。在分析传统异构数据访问方法优缺点的基础上,针对SOA中Web服务不能直接访问数据源的问题,探讨了面向服务架构的数据服务和基于数据服务的访问方式,并对基于SOA的数据服务平台进行了研究。使用微软的ADO.NET Data Service实现了数据服务,通过实例验证了数据服务不仅能够直接访问数据源,并且能通过标准的Web服务接口集成到SOA中。与其他数据访问方式的对比分析结果表明,数据服务不依赖应用程序即可对异构数据源进行统一访问。Although allowing organizations to build loosely coupled, distributed heterogeneous enterprise application, Service-Oriented Architecture （SOA） doesn＇t support direct data access or manipulation to heterogeneous data sources. To lower the dependency of data access on applications, a preliminary research is conducted on data access mechanism adopting data service in SOA. Based on the analysis of applying traditional data access methods to heterogeneous data sources in SOA, data service is researched and a data access method using data service is proposed, aiming at providing direct access to data sources using web services. ADO. NET Data Service from Microsoft is employed to implement data service and examples are illustrated, proving that data service not only provides direct access to data sources, but also can be integrated into SOA through standard web service interfaces. As is shown by the comparison with other data access methods, data service offers uniformed access to heterogeneous data sources without involvement of individual applications.

关 键 词：数据服务 面向服务架构 数据访问 WEB服务 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]