[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Fwd: Data versioning strategy: address semantic, relations
Len Bullard writes: > The problem then is may be multi-variate: a change breaks one > system but not another. As in does not break the processing > application but does break the help description of the running > system. It isn't just *identifying* the change; it is capturing the > real and non-real time effects. > > That is the difference between *a* version (identifying the > resource) and version control (identifying and executing the > process). Not a new topic here or elsewhere. Yes, I agree. More fundamentally, I think we need to be careful with terminology. It's quite common to see discussions in which there is debate about whether version 1 of a language is compatible with version 2. I don't think Roger's original note falls into that trap, but I think some of the discussion has tended in that direction. The terminology we use can, unintentionally, frame the discussion in ways that hides important issues. I think it's usually more appropriate to ask: "for what range of uses can document D authored to conform to the specification of version X of a language be safely usable if interpreted per the specification for version Y?" and "for what range of uses can >all documents< authored to conform to the specification of version X of a language be safely usable if interpreted per the specification for version Y?" That latter question tends to capture what one means by language VX is/isn't compatible with language VY. This is just my opinion, but I've found it a useful way to frame things. Noah -------------------------------------- Noah Mendelsohn IBM Corporation One Rogers Street Cambridge, MA 02142 1-617-693-4036 --------------------------------------
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