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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Enlightenment via avoiding the T-word
 Which is why I asked earlier about points of view on these subjects depending on implementation background. The namespace utility's usefulness has a lot to do with the system in which it is used. Again, surface syntax doesn't tell one enough about the properties of the *system*. That is why the groves people spent their time working out a way to find and map invariants. On mapping relational databases: declare all of the fields as globals and find out how much name grunge is in your legacy system. Declare them locally (children in elements whose names ARE the tablenames), and you hide all of that. Use the ODBC connection of XML Spy to the relational database and see how it represents what it gets. What you do about it depends on how much system code you are willing to rewrite and that depends on who else is using the schema. But gad, there is a lot of grunge in almost any legacy table design and you have to track a bunch of people down to find out if it is real or just grunge. Len http://www.mp3.com/LenBullard Ekam sat.h, Vipraah bahudhaa vadanti. Daamyata. Datta. Dayadhvam.h -----Original Message----- From: Tim Bray [mailto:tbray@t...] Hmm, I'm not willing to go nearly as far as Rick. But he's done a good job of pointing out that overloading names in a single markup vocabulary does have a real cost, and one you should worry about (and I found it instructive that in the RDBMS world, ERWIN raises a flag on this). On the other hand, when I'm writing O-O software, when I pick variable and method names I don't worry very much about whether they clash with locals elsewhere. Hold, on that's not true: if you're building a class in Java, you'd better not have a toString() method that launches missiles :)... but it's certainly a different style of thinking. There's scope for a nice general essay here about the differences between ways of thinking about data; basic WF XML, OOP, and RDBMS represent instructively different thought patterns. PSVI and DTDs and SOAP and so on fit into this pattern in interesting ways. -Tim 
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