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David Kershaw
David Kershaw is the professional services manager at Altova, Inc., the XMLSPY company. David brings 11 years of software engineering, project, and product management to Altova. His previous positions include serving as the Director of Engineering at Classwell Learning Group and the Group Director of Engineering at Organic, Inc. David received his master's degree from Harvard University and his bachelor's degree from the University of Massachusetts.

Finding the Declarative Tipping Point; XQuery, XML, and the RDBMS
Moving information from a database into an application may be the most common challenge developers face. How many of us make it through life without meeting object/relational (O/R) mapping in some form? Certainly not too many. Lately it has become equally difficul...
Fighting Against Complacency
This morning I find myself pondering one of the more subtle coincidences of my daily life: this month my company, Altova, launched not only a formal standards-based XML certification exam, but also new training classes for our first systems integration-oriented ...
Multipass Validation with XSD and Schematron Part 2
In Part 1 of this article (XML-J, Volume 4, issue 7) we outlined why a development group might consider alternative validation schemes. An example from our experience is applying work group rules to the process of XSD design. We said rules could take the form of...
Multipass Validation with XSD and Schematron Part 1
If it is important that your XML documents are correct, catching mistakes early is, of course, much less costly than catching them later. This should not be news to any XML developer.

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