Validating xml parser definition
Bogue For most developers, XML is a storage mechanism for data.
You use the Web.config file to store configuration information about your Web-based applications.
The element declarations in an XML Schema can specify the namespace/s of the elements in the XML document.
This month, however, we tackle just one, the question of questions -- the question that nearly everyone asks at some point: Which XML parser should I use?
Validating parsers perform more rigorous checks, such as making sure the document conforms to the rules laid out by its document type definition (DTD).
Validating parsers also can use information from the DTD to provide extra capabilities, such as entity substitution and attribute defaulting.
It looms larger, of course, as the documents go up in size (and as you need more validating-type features).
Back in 1998, within a few months of the XML 1.0 Recommendation's release, one observer reported on XML-DEV that he'd found over 200 parsers (after hitting 200, he gave up counting).In practice, though, I've occasionally run into discrepancies, and for this reason I'll usually run a document through more than one parser just to be sure of no surprises when it's actually delivered to an application.(To their credit, the parser authors have always been very receptive to bug reports -- or, as the occasion warrants, to pointing out that it's my interpretation of the spec that's at fault! well-formedness consideration as with the online checkers.You may find that you prefer one tool's error reporting format to another's. By the way, in theory you need to submit a given document to only one parser to ensure its "correctness." After all, the XML Recommendation is what it is, right?No wiggle room for interpreting a given chunk of code as correct or not, right?
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With such an avalanche of queries, you'd think our priority would be to answer as many as possible.