[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Data versioning strategy: address semantic, relationship,
On 07/12/2007, Costello, Roger L. <costello@m...> wrote: > QUESTIONS > > a. Do you agree with the three categories of change? > > b. Do these categories represent all types of change? > > c. Do you agree that a versioning strategy must address semantic, > relationship, and syntactic changes? > > /Roger > These are three categories which are acceptable in certain situations. There are situations where these are not acceptable. If the semantics were, say, legally binding (as with legally binding documents) it might not be acceptable to change them. On the other hand there may be other categories of change which are acceptable in other situations. So I think there is always a problem with versioning - that it is a subject where one size doesn't fit all. When we have looked at versioning for XML business documents we have found that the requirements are so strict and rigorous in comparison to other domains that the accepted wisdom didn't really apply. This can be quite disheartening and baffling but is largely due, I think, to over-simplification. It's not so much a tutorial matter as a doctorate thesis matter. However, maybe these three categories cover a certain area of requirements which can be quite simply described so that they aren't seen as the whole picture and so that folk using XML in areas out of scope to these categories don't seriously underestimate the task they might have in hand. Given that, I think they are a good fit for the average, innocuous, internal use of XML. -- Stephen Green Partner SystML, http://www.systml.co.uk Tel: +44 (0) 117 9541606 http://www.biblegateway.com/passage/?search=matthew+22:37 .. and voice
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