[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: "XML for the Long Haul" program available
> characters. Only after that comes XML with its opening tags, closing > tags, attributes, and namespaces. But that is already relatively easy, > because at this point, you should see text that you can more or less > understand. > I suggest this is just the basement of the tower of Babel. Once you have recognized string of characters you still have to decode the original document. XML is typically (usually?) not the humanly consumed format or even close to it. Consider an Open Office or Word document or PDF document in XML format. Try to reconstruct the original document layout or meaning from the XML without the necessary software processors. Or take a representation of a database in XML. For relevency (as something someone may want to actually read the real meaning), consider a government database of the history of land ownership records, or say even your health records from 80 years ago. Parsing the XML and turning it into something *usable and comprehensible* is a daunting task, potentially nearly impossible without the actual software that was used to create/read the original document. This data may relational (in the loose or strict sense() and essentially unusable without understing things like foreign keys, ordering, implicit enumerations (does a "125A64" mean you bought or sold a property at that date ?) How about an ICD9 code ? There's often a lot more you need then just the string of bytes to actually make data usable. This is the thinking/strategy many archivests are taking ... that its not enough to just reconstruct the bytes. You need to also reconstruct the software where those bytes were relevent/intepreted as well as all the 'out of band' data which it references or is implied. -David ( Cant wait for the conference !) -- ------------------------- David A. Lee dlee@calldei.com http://www.calldei.com http://www.xmlsh.org
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