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Simple XML

Simple XML is a variation of XML containing only elements. All attributes are converted into elements. Not having attributes or other xml elements such as the XML declaration / DTDs allows the use of simple and fast parsers. This format is also compatible with mainstream XML parsers.

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Structure

For example:

<Agenda> <type>gardening</type> <Activity> <type>Watering</type> <golf-course> <time>6:00</time> </golf-course> <yard> <time>7:00</time> </yard> </Activity> <Activity> <type>cooking</type> <lunch> <time>12:00</time> </lunch> </Activity> </Agenda>

would represent:

<?xml version="1.0" encoding="UTF-8"?> <Agenda type="gardening"> <Activity type="Watering"> <golf-course time="6:00"/> <yard time="7:00"/> </Activity> <Activity type="cooking"> <lunch time="12:00"/> </Activity> </Agenda>

Validation

Simple XML uses a simple XPath list for validation. The XML snippet above for example, would be represented by:

/Agenda/type|(Activity/type|(*/time))

or a bit more human readable as:

/Agenda/type /Agenda/Activity/type /Agenda/Activity/*/time

This allows the XML to be processed as a stream (without creating an object model in memory) with fast validation.

References

  1. http://www.w3.org/XML/simple-XML.html