XML DTDLesson 81Free preview

DTD Examples

This lesson is part of XML · All levels

Summary

Examples of DTDs show the use of internal and external subset in real-world scenarios such as store orders and notes. The same pattern repeats: declaration of sequential elements, text elements with #PCDATA, then attributes to elements that require metadata. You can copy this framework to validate your own documents.

Key points

General examples: internal DTD for notes and ship orders
External DTD separates the contract structure from the data
Repeating elements use the operator + or * like (cd+)
The order attribute uses the ID and IDREF types to refer to the item
Validation ensures that every document complies with the DTD declaration

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