XML Schema Numeric Datatypes

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# XSD Numeric Data Types

Decimal data types are used for numeric values.

## Decimal Data Type

The decimal data type is used to specify a numeric value.

The following is an example of a decimal declaration in a schema:

    <xs:element name="prize" type="xs:decimal"/>

An element in your document might look like this:

    <prize>999.50</prize>

Or it might look like this:

    <prize>+999.5450</prize>

Or it might look like this:

    <prize>-999.5230</prize>

Or it might look like this:

    <prize>0</prize>

Or it might look like this:

    <prize>14</prize>

Note: The maximum number of decimal digits you can specify is 18.

## Integer Data Type

The integer data type is used to specify a numeric value without a fractional component.

The following is an example of an integer declaration in a schema:

    <xs:element name="prize" type="xs:integer"/>

An element in your document might look like this:

    <prize>999</prize>

Or it might look like this:

    <prize>+999</prize>

Or it might look like this:

    <prize>-999</prize>

Or it might look like this:

    <prize>0</prize>

## Numeric Data Types

Note that all of the data types below derive from the Decimal data type (except for decimal itself)!

Name | Description
--- | ---
byte | A signed 8-bit integer
decimal | A decimal value
int | A signed 32-bit integer
integer | An integer value
long | A signed 64-bit integer
negativeInteger | An integer containing only negative values ( .., -2, -1.)
nonNegativeInteger | An integer containing only non-negative values (0, 1, 2, ..)
nonPositiveInteger | An integer containing only non-positive values (.., -2, -1, 0)
positiveInteger | An integer containing only positive values (1, 2, ..)
short | A signed 16-bit integer
unsignedLong | An unsigned 64-bit integer
unsignedInt | An unsigned 32-bit integer
unsignedShort | An unsigned 16-bit integer
unsignedByte | An unsigned 8-bit integer

## Restrictions on Numeric Data Types

Restrictions that can be used with Numeric data types:

- enumeration
- fractionDigits
- maxExclusive
- maxInclusive
- minExclusive
- minInclusive
- pattern
- totalDigits
- whiteSpace

From http://www.w3schools.com (Copyright Refsnes Data)