Article:		Going Native: Making the Case for XML Databases
Subject:		XML data model vs. relational model
Date:		2005-04-01 02:41:31
From:		gregoryjorgensen
From the article: "While most real-world uses of native XML databases do not fit cleanly into any single category, it is possible to characterize them in terms of a limited number of use cases. The most popular of these are storing and querying document-centric XML, integrating data, and storing and querying semi-structured data. Native XML databases are used in these cases because the data involved does not easily fit the relational data model, while it does fit the XML data model." What is the XML data model? Hierachy expressed with markup? Does the XML model have any of the mathematical foundations of the relational model? On what basis can the XML and relational models be compared? I've never seen an example of structured data that doesn't fit the relational model but does fit the XML model. Can you give an example and explain why it doesn't fit the relational model? Greg Jorgensen PDXperts LLC Portland, Oregon USA

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