September 2003
Intermediate to advanced
336 pages
7h 20m
English
Content preview from Effective XML: 50 Specific Ways to Improve Your XMLBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Document Type Definitions
If the W3C XML Schema Language is a Torx screwdriver, then DTDs are the old reliable flathead screwdriver, not nearly as sexy but a lot more practical and a lot easier to find at the corner store. Contrary to popular belief, schemas do not replace DTDs. DTDs are an extremely well-tested, well-understood, broadly supported, compact syntax for expressing constraints on XML documents. Furthermore, DTDs can do things that none of the other schema languages can accomplish, notably entity definition. Finally, a document can have both a schema and a DTD.
Don't reject DTDs simply because they're not as hip as schemas. Indeed, if your constraints are limited to the element and attribute structure of a document and do not involve ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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