November 2000
Intermediate to advanced
1152 pages
23h 32m
English
Content preview from Inside XML
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Chapter 5. Creating XML Schemas
For the previous two chapters, we've been working with DTDs. Over time, many people have complained to the W3C about the complexity of DTDs and have asked for something simpler. W3C listened, assigned a committee to work on the problem, and came up with a solution that is much more complex than DTDs ever were: XML schemas.
On the other hand, schemas are also far more powerful and precise than DTDs ever were. With schemas, not only can you specify the syntax of a document as you would with a DTD, but you also can do the following: specify the actual data types of each element's content, inherit syntax from other schemas, annotate schemas, use schemas with multiple namespaces, create simple and complex data types, ...
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