| XML Schema Built-In Simple Types | ||
|---|---|---|
| Name | Type | Examples | 
| ID | XML 1.0 ID attribute type | any XML name that's unique among ID type attributes | 
| IDREF | XML 1.0 IDREF attribute type | any XML name that's used as an ID type attribute elsewhere in the document | 
| ENTITY | XML 1.0 ENTITY attribute type | any XML name that's declared as an unparsed entity in the DTD | 
| NOTATION | XML 1.0 NOTATION attribute type | any XML name that's declared as a notation name in the DTD | 
| language | valid values for xml:lang as defined in XML 1.0 | en-GB, en-US, fr | 
| IDREFS | XML 1.0 IDREFS attribute type | a white space separated list of IDREF names | 
| ENTITIES | XML 1.0 ENTITIES attribute type | a white space separated list of ENTITY names | 
| NMTOKEN | XML 1.0 NMTOKEN attribute type | 12 are you ready | 
| NMTOKENS | XML 1.0 NMTOKENS attribute type | a white space separated list of name tokens | 
| Name | An XML 1.0 Name | set, title, rdf, math, math123, href | 
| QName | a prefixed name | song:title | 
| NCName | a local name without any colons | title |