September 2002
Intermediate to advanced
1008 pages
22h 3m
English
book
XML Schema Complete Reference, The
by Cliff Binstock, Chris Galtenberg, Mike Wooding, Chris Dix, Mitchell Smith, Dave Peterson
Content preview from XML Schema Complete Reference, The
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4.1. XPath
Fundamentally, an XPath is an expression. Evaluating an XPath expression results in one of the following:
A node set
A Boolean
A floating-point number
A string of Unicode characters
The scope of XPath is far more extensive than the constructs covered in this section. For example, many constructs are designed to support XSLT. This section covers only those portions of XPath pertinent to XML schemas. Specifically, identity constraints require the resultant node set to contain only elements or attributes. Fragment identifiers (see Section 4.2) further restrict the resultant node set to contain only elements. Therefore, the Boolean, floating-point number, and string values are mostly not relevant in the context of XML schemas (see Section ...
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