Abstract: An expert system for appraising pottery and porcelain is designed, which includes a huge database. It is the main factor of how to use main memory source effectively during the period of the system design. An management policy is designed, which can redistribute main memory source of B+ tree index file buffer. It can also promote the running efficiency of the system due to redistributing page layout of the main memory in file buffer.

Key words: Page layout, Redistribution, Main memory source, B+ Tree index file, Buffer

摘要： 在作者研究的鉴定古陶瓷的专家系统（Expert System for Appraising Pottery and Porcelain， ESAPP）中，需要使用一个大型的数据库管理系统，如何合理而有效地使用内存资源，是进行系统设计时需要考虑的一个重要因素。在该系统中，设计了一种“可重定向内存资源的B+树索引文件缓冲区管理策略”，它把文件缓冲区中的内存页面定义为一种可以重定义的系统资源，极大地提高了系统的运行效率。

关键词: 页面, 重定向, 内存资源, B+树索引文件, 缓冲区

CLC Number: 

• TP39