The World Wide Web Consortium (W3C) XML 1.0 Recommendation also defines enumerated types (notations and enumerations) and a set of tokenized types. These types are referred to as "primitive types" within this Microsoft XML documentation.
The primitive types include the following, defined in Section 3.3.1 of the W3C XML 1.0 Recommendation:
entity | Represents the XML ENTITY type. |
entities | Represents the XML ENTITIES type. |
enumeration | Represents an enumerated type (supported on attributes only). |
id | Represents the XML ID type. |
idref | Represents the XML IDREF type. |
idrefs | Represents the XML IDREFS type. |
nmtoken | Represents the XML NMTOKEN type. |
nmtokens | Represents the XML NMTOKENS type. |
notation | Represents a NOTATION type. |
string | Represents a string type. |
XML Data Types Reference | XML Data Types | Supported Data Type Conversions | XML Schema Developer's Guide | XML Schema Reference