The Stndy of Massive lnformation Management System 13ased on Multilevel Storage Architecture
基于多级存储结构的海量信息管理系统的研究

It is very important for such large-scale application systems as global information systems, GIS,digital libraries, data warehousing to effectively manage and manipulate the large volumes of infor marion(more than terabytes of data). One of challenge problems is to study massive information management system and related techniques. Since the large volumes of information are mainly stored on ter tiary storage devices,the study of massive information management system should focus on the following aspects. (1)the multilevel storage architecture in which the tertiary storage devices are main data media and the secondary storage devices are data cache; (2)scalable system architecture of massive in formation management system; (3)retrieve process techniques. This paper wilt deeply study and discuss the above problems.