This article introduced the correlation concept of heterogeneous database, such asODBC, SQL, transform theory of heterogeneous database. Then it analyzed the automatching of database source using XML and discussed the status of databaseinteractions.

• 从论文结构上说,本文首先介绍了异构数据库的相关概念,包括ODBC,SQL,异构数据库转换原理等,然后利用XML对数据源自动识别做了分析实现,并以CROSSDB(交叉SQL语句)为例探讨了数据库交互访问的研究状况。