[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Comparing PUBLIC identifiers for equality.
Hello all, I am working on a repository application, which needs to carry out comparison of SYSTEM, PUBLIC and Namespace identifiers. I'm trying to figure out how to deal with PUBLIC identifiers, and I'm wondering about the following o Are PUBLIC identifers guaranteed to be unique? For example, if the PUBLIC identifier "-//W3C//DTD HTML 4.0 Transitional//EN" is used, can different people legally use that identifier to refer to different things? I suppose another way of stating this question is "How are people's catalog databases populated?" o Is there a repository or management body for well-known PUBLIC identifiers? o Is there a standard structure/grammar which I can use to decompose PUBLIC identifiers? If PUBLIC identifiers are globally unique, and always refer to the same thing, then obviously (?) I can just do a simple string comparison to see if they are equal. TIA for any enlightenment. Alan.
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