The two previous columns in this space dealt with a cookbook approach to database development. This month I hope to provide enough information for you to decide whether to learn Object-Role Modeling (ORM), the Unified Modeling Language (UML) and the extensible Markup Language (XML). UML and ORM are obviously modeling technologies, but where does XML fit into the picture? Why did I include XML with two obvious modeling technologies? XML is more than a document markup language—it's a solution for content modeling and creating standards for content.
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