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5.1 XML Schema Built-in Datatypes
5.2 XForms Datatypes
This chapter defines the datatypes used in XForms, both built-in and defined for XForms.
XForms includes all XML Schema datatypes, including the concepts of value space and lexical space, and all constraining facets, as specified in [XML Schema part 2]. These are further divided into two modules, called Basic and Full, and are as follows. Base types included in module basic are marked with an asterisk *. Datatypes derived by restriction and derived by list from these base types are included in both Basic and Full modules.
Built-in primitive types:
Built-in derived types:
The Schema for XForms derives the following types for use within forms:
This datatype serves as a base for the listItems datatype. The value space for listItem permits one or more characters valid for xsd:string, except whitespace characters. This datatype is suitable for XForms Basic or XForms Full.
XForms includes form controls that produce simpleType list content. To prevent the need of authors to continuously redefine a derived-by-list datatype suitable for this case, one is included here. The value space for listItems is defined by list-derivation from listItem. This datatype is suitable for XForms Basic or XForms Full.
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In most cases, it is better to use markup to distinguish items in a list. See 8.11.3 itemset.
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