Hi,
Yes, I think that being able to run queries against versioned data is one of the main motivations for having a versioning system tailored to XML.
The XQuery world provides a very good basis for this: for instance, the XQuery Update Facility defines Pending Update Lists, and these are perfect for diffs. Also, the XQuery and XPath Data Model has the concept of node identity, of which the versioning system can keep track.
Kind regards,
Ghislain
On Sep 17, 2011, at 4:51 PM, Johannes.Lichtenberger wrote:
> But as a side note -- with time aware XPath or even XQuery-extensions a
> versioned XML-DBS can be used to analyse time-dependent data, which
> might be significant in many areas. What do others think?
