The Research of an XML-based Grid Information Modelling and Retrieval System

To achieve the goal of grid computing, scalable and effective mechanisms for representing, managing, and retrieving diversiform grid information are required. This paper presents an XML-based Grid Information Management System (XGIMS), which implements grid information modelling and retrieval. With GLUE specification, an extensible schema service is proposed, which supports user-defined resource schemas. Different from lots of existing approaches, an index- based XML parser is used to build indexes of grid resources based on the model. Furthermore an index- based XPath engine is presented for efficient and flexible query. XGIMS has been applied to the Information Service in ChinaGrid and the experiment results proved its efficiency.