The number of units allowed in a value
For strings (string,
normalizedString, token,
QName, NCname,
ID, IDREF,
language, anyURI, ENTITY,
NOTATION, and NMTOKEN)
the units are characters
For lists (IDREFS, ENTITIES,
and
NMTOKENS) the units are tokens
For binary types (hexBinary, base64Binary)
the units are bytes after decoding
Must be a non-negative integer
For example, to say that all names and titles must contain between 1 and 255 characters:
<?xml version="1.0"?>
<element name="SONG" xmlns="http://relaxng.org/ns/structure/1.0"
datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
<element name="TITLE">
<data type="string">
<param name="minLength">1</param>
<param name="maxLength">255</param>
</data>
</element>
<oneOrMore>
<element name="COMPOSER">
<data type="string">
<param name="minLength">1</param>
<param name="maxLength">255</param>
</data>
</element>
</oneOrMore>
<zeroOrMore>
<element name="PRODUCER">
<data type="string">
<param name="minLength">1</param>
<param name="maxLength">255</param>
</data>
</element>
</zeroOrMore>
<optional>
<element name="PUBLISHER">
<data type="string">
<param name="minLength">1</param>
<param name="maxLength">255</param>
</data>
</element>
</optional>
<optional>
<element name="LENGTH">
<data type="string"/>
</element>
</optional>
<optional>
<element name="YEAR">
<data type="gYear"/>
</element>
</optional>
<oneOrMore>
<element name="ARTIST">
<data type="string"/>
</element>
</oneOrMore>
</element> In compact syntax:
element SONG {
element TITLE {
xsd:string { minLength = "1" maxLength = "255" }
},
element COMPOSER {
xsd:string { minLength = "1" maxLength = "255" }
}+,
element PRODUCER {
xsd:string { minLength = "1" maxLength = "255" }
}*,
element PUBLISHER {
xsd:string { minLength = "1" maxLength = "255" }
}?,
element LENGTH { xsd:string }?,
element YEAR { xsd:gYear }?,
element ARTIST { xsd:string }+
}