dBASE　Ⅳ索引文件结构  

THE STRUCTURE OF dBASE Ⅳ INDEX FILE

作　　者：宋林松[1] 

机构地区：[1]苏州丝绸工学院管理工程系

出　　处：《苏州丝绸工学院学报》1994年第3期61-68,共8页Journal of Suzhou Institute of Silk Textile Technology

摘　　要：本文探索了ｄＢＡＳＥⅣ索引文件的结构．叙述了索引树的生长规律，给出了确定索引树全部结构参数的公式和算法流程，用户填入索引宽度和参与索引的记录数，即可求出所有参数，得到完全透明的结构图．此外．也讨论了索引树的最小配置、最大配置和占空比问题．he structure of dBASE IV index file has been researched in this paper. The growing regulation of index tree is described. It has been given that formula and arithmetic method to determine all structure of index tree. When the user fills with the width of key and the numbers of index records, all parameters of structure and fully transparent structure scheme are obtained. Finally the maximum configuration, minimum configuration and the fill factor of index tree are also discussed.

关 键 词：索引文件结构 dBASEⅣ 关系数据库 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]