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At 4:42 PM +0100 6/9/04, Bill de hÓra wrote: >> Why not? What does the RDF buy you here? > >Much the same thing a database would, or a >program would. Structured relations and uniform >evaluation. You're going to need to be more specific. I don't see that we don't have these things with plain XML. >The problem with your position is that you're >doing something along the lines of comparing >Lisp to Sexprs and asking, what does Lisp buy >me? You're not taking in account the code that >needs to impute meaning into the Sexpr in the >absence of a Lisp evaluator. Let's run with that analogy for a minute. If I were claiming Lisp and S-exprs were equivalent, you could show me some Lisp programs that could not be written as S-exprs without also writing an S-expr interpreter. I want to see the RDF programs that could not equally easily be written with plain XML. So far I've only heard it claimed that these exist, but I haven't been able to get anybody to produce one. In fact, the few cases I have looked at deeply turned out to be based on plain XML and not RDF at all! If this stuff is really practical, it shouldn't be that hard to come up with an existence proof. -- Elliotte Rusty Harold elharo@m... Effective XML (Addison-Wesley, 2003) http://www.cafeconleche.org/books/effectivexml http://www.amazon.com/exec/obidos/ISBN%3D0321150406/ref%3Dnosim/cafeaulaitA
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