Abstract: Starting from analyzing CIM data access mechanism,this paper expounds the methods of resource location,data inquiry,and data description in the process of data access.This research introduces the realization code of CIM data access interface Resource ID Service and Resource Query Service based on FastDB.The functions and ways to deal with the exceptional conditions are also explored.This way can make effective use of CPU period and memory,and to some extent,can realize the real-time data operation,which improve the exploitation,development and the maintainance of the system.

Key words: FastDB, DAF, data access, CIM, interface