工程数据库的双缓冲区管理机制  

The Double Buffering Management System for an Engineering Database

作　　者：王同洋[1] 杨志新[1] 黄金国[1] 周济[1] 

机构地区：[1]华中理工大学CAD中心

出　　处：《华中理工大学学报》1994年第1X期68-72,共5页Journal of Huazhong University of Science and Technology

摘　　要：提出了一面向对象数据库系统Ｏ２Ｓ的双缓冲区机制，阐述了页面缓冲区和对象缓冲区的管理数据结构及其缓冲区内的废品回收等，双缓冲机制能有效地提高应用对象的访问效率。The buffering technique is one of the important methods for a database management sys-tem to maximize the data shareability while minimizing the network traffic and I/O. Thepage buffering used in conventional database systems is not adequate for supporting the char-acteristics of an object in engineering application. A double buffering,i.e.,page bufferingand object buffering management scheme for use in the object-oriented engineering databasemanagement system O2S,is proposed.The page-buffer management and object-buffer man-agement are described and the detailed data structure shareability in the object buffer pool,concurrent control and garbage recollection are given.

关 键 词：工程数据库 数据库 面向对象 缓冲区管理 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]