XML promotes separation of presentation and data, reusability, extensibility, and division of labor. In addition, it has a simplified data model, allows one transaction in one place, and helps to simplify testing. XML is also becoming increasingly popular for allowing integration with legacy systems, a trend which promises to continue in the future. In this work a method for development of web site for processing data stored in relational database system is proposed. Method is based on Microsoft SQL Server 2000 new features that support XML functionality. The combination of these features makes SQL Server 2000 an XML-enabled database server. The design of data processing system on the Web was based on mapping between UML, relational and XML schemas. For implementation of the system SQL Server Annotated Schemas, XPath queries, Transact-SQL FOR XML, Updategrams and XSL technologies were used. The experimental Information System for Forest Re-Creation was developed.