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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Motivations for namespaces (sorry)
 David Megginson writes: >Gustaf Liljegren writes: > > > Got some inspiration from the "Looking for an example of a name > > collission" thread. It's funny that no one seem to be able to > > present a *good* working example of how namespaces solves name > > conflicts. I'm not opposing namespaces myself, but I still try to > > find the right place for them. > >Do you want a hypothetical example or a real-world example? >Unfortunately, real-world XML is still a bit hard to come by even >without vocabulary mixing, but it's easy enough to make up credible >examples. Take something as simply as "vendor-id"; you might have >something like... Something that I have found in processing data from our ERP system is that certain terms *do* have real-world namespace collisions that need to be resolved by either messing with names, using namespaces or using some other method of determining usage. For example, there are "SalesOrder" and "PurchaseOrder" fields in a number of tables in the database, and some of them are "our" numbers and some are the numbers provided by the customer. Now, admittedly, in this case all of the data is basically under my control for in-house usage, but if I'm playing with data either from outside the company or mixed internally and externally-generated, it is sort of handy to have some kind of notification that "PurchaseOrder" is *our* purchase order or *their* purchase order without having to parse the whole document and find out. I'm certainly not up to speed enough on any of the debates to say one method is better than another, as I'm just getting seriously involved in using XML around the business, but I do know that there's certainly a possibility of a real collision happening here. There are a number of other fields with the same kind of issues in our ERP system, and I can imagine that other systems would have similar "inbound vs. outbound" problems with similar names. Joe Mayer Information Systems Kathrein Inc, Scala Division Medford OR 
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