数据库技术是一门历史弥坚的学科，不像其它的计算机技术会随着时间的推移而变得越来越没有声息。考虑其原因，则是因为信息的爆炸对数据库技术的要求只增不减。在互联网日益发展、壮大的背景下，在因特网普及浪潮持续高涨的情况下，如何让原来在单机中使用的数据库可供多机使用，也成了必然的趋势。-database technology is a historical time; disciplines, Unlike other computer technology will be with the passage of time and become less and less quietly. Its causes, it is because the information explosion of database technology requires only unchanged. The Internet growing, the growth of the background, the Internet wave continued rising popularity of the circumstances, how the original single in the use of the database for the use of multi-machine, has become an inevitable trend.