Development of a Web-Service for the DIOXIN- Database of Germany EnviroInfo 2004, 18th International Symposium, October 21st to 23rd 2004, CERN Genf, Switzerland Development of a Web-Service for the DIOXIN- Database of Germany Federal Environmental Agency Berlin / G. Knetsch Bavarian State Ministry of the Environment, Public Health and Consumer Protection / E. Weihs deborate GmbH / R. Pöschel

Agenda Prototyping of the Web-Service Conclusion and Outlook Political background Political background Special approaches Technical approaches Concept of the realization Prototyping of the Web-Service Conclusion and Outlook

Commission of 37th Conference of Environment Ministers of Germany in 1991 to the DIOXIN Working Group (Federal-Länder joint working group) 4th Conference of Ministers of Europe in Århus „Environment for Europe“ (1998) and the Admendment of the Environmental Information Act POP-Convention (2002) and obligations of reporting (EEA, UN/ECE, EU)

Agenda Prototyping of the Web-Service Conclusion and Outlook Political background Special approaches Special approaches Technical approaches Concept of the realization Prototyping of the Web-Service Conclusion and Outlook

Cooperation with the Federal Office of Consumer Protection and Food Safety (BVL) and the Federal Institute for and Risk Assessment (BfR) (link between environment and health) Cooperation with the Federal Laender (mainly data producer and supplier of monitoring programmes) Documentation of meta-data and analytic data for the evaluation and assessment of the state of environment

Transfer, evaluation and access to these environmental and health data via a Web-application (Data sharing) Profile specific data requests to the Web-Service of different user groups (data producer and provider, special user and public) Documentation of validated time series (Quality assurence of the DIOXIN-Database)

Data Shering requires cooperation with partners involved in technological research and „cutting-edge“ projects „Experience Sharing“ Cooperation with Bavarian State Ministry of the Environment, Public Health and Consumer Protection (Agreement of Cooperation)

Agenda Prototyping of the Web-Service Conclusion and Outlook Political background Special approaches Technical approaches Technical approaches Concept of the realization Prototyping of the Web-Service Conclusion and Outlook

Target: Sharing of the DIOXIN-Database via modern technologies of Internet (XML) Federal States (Laender) and institutes as datenprovider with shared mode to the data Public user with limited access to the database Professional user (poweruser) with shared mode to aggregated data Technological optimizing and „modernisation“ of the functionalities of the existing Client-Server-application

Generell conditions: Consinderation of the UBA-Styleguides and guidelines of security Interface to the German Environmental Network (gein®) and the virtuell datakatalogue (vUDK) Use of Open-Source-Software Admission to the data via the Internet under reconditions of the W3C-standard (XML-schema) Integration of existing tools (Statistic, Reporting-Tool NetCharts)

Technical components: Processing language Java Apache Webserver Apache TOMCAT (Servlet Engine) Apache Axis (Framework for Webservices) Apache CASTOR (Mapping XML – relational database system) StrutsCX (XML supplement of frameworks Apache Struts) Xalan / Xerces (XML-Parser) Log4J for applicationlogging DB-Server ORACLE 9i

Agenda Prototyping of the Web-Service Conclusion and Outlook Political background Special approaches Technical approaches Concept of the realization Concept of the realization Prototyping of the Web-Service Conclusion and Outlook

Computer centre of the Umweltbundesamt Technical architecture of www-DioxinDB Firewall Firewall Open source „area“ Internet DMZ Computer centre of the Umweltbundesamt XML – „area“ Webserver Apache, Tomcat Web-Service Client (App. Server) TOMCAT, Xalan, Xerces, XPath, StrutsCX, etc. Web-Service Datamapping XML – rel. DB Apache Axis, CASTOR Database- server Data-Provider Special User Public AJP XML (SOAP) SQL (JDBC) HTTPS gein®/vUDK XML (SOAP)

Multi-level architecture of www-DioxinDB Access via the Internet - HTTPS-protocol Request to the application-server XML-Stylesheets trigger profile specific retrieval XML-transformer produces profile specific HTML-page.

Screenshoots of the application (log-in)

Feeding meta-data via XML-Stylesheets Data Transfer: Feeding meta-data via XML-Stylesheets Up- and downloading of data via interfaces of XML

Retrieval criteria: compartiment, location, time Data request: Retrieval criteria: compartiment, location, time Searching for monitoring programmes and data producer

Data request results: Selected meta- data and analytic data of monitoring programmes

Conclusion: Open for the XML-Future Cost reduction Web-Service of the DIOXIN-Database - example of data sharing or different user groups Setup of a harmonised, sound and current base of data for POPs Open for the XML-Future Cost reduction Easy to realize Data intefaces for differnt purposes No platform dependenc Updating and quality assurance at any time Use of open source software and XML technology…. Use of open source software and XML technology…. The Web-Service could be a part of the initiative of BundOnline 2005 as a online-service for the public.

Outlook: Supply-side appropriation of environmental information Use the Web-Service for documentation of international POP-monitoring projects English version Increased cooperation and knowledge sharing with other communities

Poster Session on Friday More information: www.umweltbundesamt.de portal „POP – DIOXINE“ www.umweltministerium.bayern.de www.deborate.de/dioxine Poster Session on Friday