XML(eXtensible Markup Language) has recently emerged as a new standard for data representation and exchange on the Internet. Web servers and applications encoding their data in XML can quickly make their information available in a simple and usable format, and such information providers can inter- operate easily. Information content is separated from information rendering, making it easy to provide multiple views of the same data. XML data files can be rendered via specifications in XSL (eXtensible Stylesheet Language). Most of us are familiar with web sites that contain vast databases of useful information, but whose query and search facilities are surprisingly primitive.
This paper proposes web agent for data replication between heterogeneous DBMSs(Database Management System). Web agent system manages database on the web and exchanges data in heterogeneous database using XML.
Using web page, user sends to web server information about database, web server creates query sentence for database connection. Using created query sentence, web server exchanges data with database server.
Web server makes XML document from source database data, XML document saves destination database. Using this way, web agent system exchange data between databases. So, this web agent system manage database data on the web, exchange data between heterogeneous DBMSs.