基于虚存映射的对象存储系统的设计与实现

THE DESIGN AND IMPLEMENTATION OF OBJECT STORAGE SYSTEM BASED ON VIRTUAL MEMORY MAPPING

多媒体智能数据库系统ＭＩＤＳ（ＭｕｌｔｉｍｅｄｉａＩｎｔｅｌｌｉｇｅｎｔＤａｔａｂａｓｅＳｙｓｔｅｍ）的存储系统是一个强大的、高性能的对象存储系统．该存储系统是ＭＩＤＳ引擎的核心．它是基于虚存映射的存储系统，在Ｃｌｉｅｎｔ／Ｓｅｒｖｅｒ的体系结构下，为数据库提供了大容量的、复杂的、共享的、多媒体数据存取，然而又不失面向对象数据模型的种种优点．在本文中，我们将介绍基于虚存映射的对象存储系统的基本原理以及该系统设计和实现的细节．

The storage system of MIDS(Multimedia Intelligent Database System),which is a powerful, high-performance object storage system, is the heart of the MIDS Engine. The storage system is based on virtual memory mapping, offering the database features to manage large volumes of persistent, complex, shared and multimedia data, and with all the benefits of an object-oriented data model within a Client/Server architecture. In this paper, the basic principle of object storage system based on virtual memory mapping is introduced, then the details of designing and implementing such a system are provided.