Data types
The XML Schema standard includes a large number of data types (beyond those introduced in the previous chapter, needed for backward compatibility with DTDs). The following table shows all of the simple types, whether or not they are ordered types that have minimum and maximum possible values (leading and trailing '…' indicates no specified limits), and an example of the type in use:
| Simple type | Ordered type | Min and max values | Examples |
|---|---|---|---|
| string | - | - |
<note>
this is a
string </note>
|
| normalizedString | - | - | name="J Smith" |
| token | - | - | colour="red" |
| byte | Y | -128 -127 … -1 0 1 … 126 127 | -13 or 99 |
| unsignedByte | Y | 1 2 … 254 255 | age="77" |
| base64Binary | - | - | GpM7 |
| hexBinary | - | - | <image>FF008B7C22F6</image> |
| integer | Y | …. -2 -1 0 1 2 … | hourFromUTC="-2" |
| positiveInteger ... |
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