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Using XML to store Descriptive Metadata

Learn how to build a corporate data warehouse and improve business processes through XML for metadata storage. Explore the scalability and integration possibilities, as well as key tools like HTML, XSL, and JavaScript.

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Using XML to store Descriptive Metadata

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  1. Using XML to store Descriptive Metadata Richard Murphy Rosarie O’Riordan Central Statistics Office Ireland

  2. Background • Project to build a Corporate Data Warehouse • Business Process Improvement Project to document all processes • Data and Metadata now known • How to gather all metadata into one structure?

  3. Proposed Solution • Use XML to build a metadata repository • Scaleable and Web enabled • Possibility of being integrated with core metadata • Integration with further developments

  4. Tools Used • HTML [Hyper Text Markup Language] • XML [EXtensible Markup Language] • XSL [EXtensible Stylesheet Language] • ASP [Active Server Pages] • JavaScript [JavaScript is a scripting language]

  5. XML is about describing information XML was designed to describe data, and to focus on what data is XML is a markup language much like HTML XML tags are not predefined in XML. You must define your own tags XML uses a Document Type Definition (DTD) or an XML Schema to describe the data HTML is about displaying information An HTML file is a text file containing small markup tags The Markup tags tells the Web brower how to display the page An HTML file can be created using a simple text editor HTML was designed to display data, and to focus on how data looks. XML HTML{EXtensible MarkUp Language} {Hyper Text Markup Language}

  6. There must be something in addition to the XML document that describes how the document should be displayed; and that is XSL! XSL consists of three parts: XSLT (a language for transforming XML documents) XPath (a language for defining parts of an XML document) XSL Formatting Objects (a vocabulary for formatting XML documents) XSL {EXtensible Stylesheet Language}

  7. Critical Success Factors • Infrastructural Issues • Operational Issues • Content Rules • Official Corporate Policy

  8. Future Developments Corporate ‘Look and Feel’ Integrate with Core Data and Metadata Other Modules Release Calendar Access through Theme List Publication Catalogue Frequently Asked Questions Glossary of Terms/Thesaurus

  9. Future Developments ctd • Scaleable to include new fields • Archiving • Version Control • Rules and Standards

  10. Other points • Keep it simple • Functionality = Complexity • Multiple access points to metadata but • Store once reference many • Workable Solutions n.e. High Tech

  11. Thank You for Listening

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