Home arrow XML arrow Page 7 - Doing More With XML Schemas (part 4)

Closing Time - XML

In this concluding article, find out all about namespaces - what they are, how they work, and how you can use schemas to make sure that they're enforced in a consistent manner.

TABLE OF CONTENTS:
  1. Doing More With XML Schemas (part 4)
  2. Stocking Up
  3. The Name Game
  4. Setting Policy
  5. Old Friends And New
  6. Being Selective
  7. Closing Time
By: Harish Kamath, (c) Melonfire
Rating: starstarstarstarstar / 7
February 12, 2003

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And that's about it for the moment. Over the four parts of this article, I've given you a crash course in some of the more advanced aspects of XML schema design, explaining how you can use built-in schema constructs to design more efficient and extensible schemas.

I've shown you how to derive new types from existing types, either by extending or restricting them, and how to break up your schema definitions into separate files for greater maintainability. I've also shown you how to enforce basic referential integrity in a schema with primary and foreign key references, and how to enforce the use of namespaces in document instances to avoid name clashes between different document instances.

If you'd like more information on any of these topics, here are a few links you should look at:

The W3C's XML Schema section, at http://www.w3.org/XML/Schema

The XML Schema Primer, at http://www.w3.org/TR/xmlschema-0/

XML Schema Structures, at http://www.w3.org/TR/xmlschema-1/

XML Schema Datatypes, at http://www.w3.org/TR/xmlschema-2/

Till next time - happy XML-ing!

Note: All examples in this article have been tested on Linux/i586. Examples are illustrative only, and are not meant for a production environment. Melonfire provides no warranties or support for the source code described in this article. YMMV!

 
 
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