XSD Data TypesLesson 102Free preview

XSD Reference

This lesson is part of XML · All levels

Summary

The ref attribute allows one element to refer to another global element so that the declaration is written enough once. A common pattern is to place global elements such as titles and authors under <xs:schema>, then to arrange complex structures with <xs:element ref="...">. The same is true for global attributes via <xs:attribute ref="...">.

Key points

Ref may only designate global elements declared at the scheme level
Ref should not be combined with attribute name or type
Global elements can be used many times in many places.
<xs:attribute ref="..."> refers to the global attribute
Ref to the cross-nomenpace element is written with a prefix, for example ref="ns:title"

Full lesson

Code examples and quizzes

Full lessons, code examples, and quizzes are available to subscribers. 5 questions.