Monthly Archives: September 2007

Axioms of Versioning 2

Posted on Wednesday, 12 September 2007 by Marc de Graauw

I’ve written a new version of ‘Axioms of Versioning‘. I extended the formalization to get a grasp of the concept of ‘Semantic Backward Compatibility in HL7v3, which I believe is flawed (quote: “Objective of backward model compatibility is that a … Continue reading →

Posted in Blogroll, hl7, rest, version | 3 Comments

Making All Changes Compatible over Multiple Versions – Part 2

Posted on Tuesday, 11 September 2007 by Marc de Graauw

In the previous article I showed how to add an optional element and make this a compatible change over two releases, so existing receivers aren’t broken by unknown elements. It is done by following two simple principles: have one or … Continue reading →

Posted in Blogroll, version | 1 Comment

Making All Changes Compatible over Multiple Versions – Part 1

Posted on Monday, 10 September 2007 by Marc de Graauw

This article will show a way to make any change in an XML-based exchange vocabulary compatible over several versions of the exchange language. In environments where there is some control over the number of versions ‘in the field’ this is … Continue reading →

Posted in Blogroll, version | 1 Comment