Sams Teach Yourself XML in 24 Hours

Attribute Types Supported in IE

Given the attributes that were used in Listing 19.12, the only data type that you needed was the enumeration type. There are several types that are supported, as summarized in Table 19.4.

Table 19.4. The Valid Types That Can Be Assigned to an Attribute

Data Type	XML Equivalent	Meaning
id	ID	Attributevalue must be a unique identifier.
string	PCDATA	Onlycharacter data can be used.
entity	ENTITY	Attributevalue must refer to an entity.
entities	ENTITIES	Same as entity, but allows for multiple values separated by whitespace.
idref	IDREF	Value must be a reference to an id attribute.
idrefs	IDREFS	Same as idref, but allows for multiple values separated by whitespace.
nmtoken	NMTOKEN	Attribute is a mixture of name token characters, which can ...