介绍目前主要的中文编码系统,如GB2312、GBK、Unicode、BIG5等,并形象地解释这些字符集之间的包容关系,指出由于应用程序的运行环境不同,导致字符集之间转码出现问题;深入分析CALIS联机编目系统中遇到的字符集问题,包括检索、显示、排序、著录繁体字、异体字、小语种时的问题,并提出相应的解决方案。 Introduce the main Chinese encoding system, such as GB2312, GBK, Unicode, BIG5, etc., and vividly explain the inclusive relationship between these character sets. It is pointed out that due to the different operating environments of the applications, transcoding problems occur between character sets. In-depth analysis of the CALIS online cataloging system encountered character set problems, including retrieval, display, sorting, cataloging traditional Chinese characters, different characters, small language problems, and propose the corresponding solutions.