We present an approach based on knowledge medium using associative structures as a framework of information representation to gather raw information from heterogeneous information sources and to integrate it into information bases cost-effectively. We then present a knowledge media information base system called CM-2 which provides users with a means of accumulating, sharing, exploring and refining conceptually diverse information gathered from vast information sources. We describe the system's four major facilities; (a) an information capture facility, (b) an information integration facility, (d) an information retrieval facility and (d) an information refinement facility. We discuss the strength and weakness of our approach by analyzing results of experiments.