XSD Miscellaneous Data Type

Other miscellaneous data types include logical, base64Binary, hexadecimal, floating point, double precision, anyURI, anyURI, and NOTATION.

Boolean Data Type

Logical data types are used to specify true or false values.

Here is an example of a logical declaration in a scheme:

<xs:attribute name="disabled" type="xs:boolean"/>

The elements in the document should look something like this:

<prize disabled="true">999</prize>

Note:Valid boolean values are true, false, 1 (representing true), and 0 (representing false).

Binary Data Types

Binary data types are used to express data in binary form.

We can use two binary data types:

  • base64Binary (Binary data encoded in Base64)
  • hexBinary (Binary data encoded in hexadecimal)

Here is an example of a hexBinary declaration in a scheme:

<xs:element name="blobsrc" type="xs:hexBinary"/>

AnyURI Data Type

The anyURI data type is used to specify URI.

Here is an example of an anyURI declaration in a scheme:

<xs:attribute name="src" type="xs:anyURI"/>

The elements in the document should look something like this:

<pic src="http://www.codew3c.com/images/smiley.gif" />

Note:If a URI contains spaces, replace them with %20.

Miscellaneous Data Types

Name Description
anyURI 　
base64Binary 　
boolean 　
double 　
float 　
hexBinary 　
NOTATION 　
QName 　

Restrictions on miscellaneous data types (Restriction)

Restrictions that can be used with miscellaneous data types:

  • enumeration (Boolean data types cannot use this constraint*)
  • length (Boolean data types cannot use this constraint)
  • maxLength (Boolean data types cannot use this constraint)
  • minLength (Boolean data types cannot use this constraint)
  • pattern
  • whiteSpace

*Translator's Note:Constraint refers to constraint.