Primitive XML Data Types

The following table lists primitive XML schema data types, facets that can be applied to the data type, and a description of the data type.

Facets can only appear once in a type definition except for enumeration and pattern facets. The enumeration and pattern facets can have multiple entries and are grouped together.

Data Type	Facets	Description
`string`	length, pattern, maxLength, minLength, enumeration, whiteSpace	Represents character strings.
`Boolean`	pattern, whiteSpace	Represents Boolean values, which are either `true` or `false`.
`decimal`	enumeration, pattern, totalDigits, fractionDigits, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents arbitrary precision numbers.
`float`	pattern, enumeration, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents single-precision 32-bit floating-point numbers.
`double`	pattern, enumeration, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents double-precision 64-bit floating-point numbers.
`duration`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a duration of time. The pattern for `duration` is `PnYnMnDTnHnMnS`, where `nY` represents the number of years, `nM` the number of months, `nD` the number of days, `T` the date/time separator, `nH` the number of hours, `nM` the number of minutes, and `nS` the number of seconds.
`dateTime`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a specific instance of time. The pattern for `dateTime` is `CCYY-MM-DDThh:mm:ss` where `CC` represents the century, `YY` the year, `MM` the month, and `DD` the day, preceded by an optional leading negative (-) character to indicate a negative number. If the negative character is omitted, positive (+) is assumed. The `T` is the date/time separator and `hh`, `mm`, and `ss` represent hour, minute, and second respectively. Additional digits can be used to increase the precision of fractional seconds if desired. For example, the format `ss.ss...` with any number of digits after the decimal point is supported. The fractional seconds part is optional. This representation may be immediately followed by a "Z" to indicate Coordinated Universal Time (UTC) or to indicate the time zone. For example, the difference between the local time and Coordinated Universal Time, immediately followed by a sign, + or -, followed by the difference from UTC represented as `hh:mm` (minutes is required). If the time zone is included, both hours and minutes must be present.
`time`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents an instance of time that recurs every day. The pattern for `time` is `hh:mm:ss.sss` with optional time zone indicator.
`date`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a calendar date. The pattern for `date` is `CCYY-MM-DD` with optional time zone indicator as allowed for `dateTime`.
`gYearMonth`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a specific Gregorian month in a specific Gregorian year. A set of one-month long, nonperiodic instances. The pattern for `gYearMonth` is `CCYY-MM` with optional time zone indicator.
`gYear`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a Gregorian year. A set of one-year long, nonperiodic instances. The pattern for `gYear` is `CCYY` with optional time zone indicator as allowed for `dateTime`.
`gMonthDay`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a specific Gregorian date that recurs, specifically a day of the year such as the third of May. A `gMonthDay` is the set of calendar dates. Specifically, it is a set of one-day long, annually periodic instances. The pattern for `gMonthDay` is `--MM-DD` with optional time zone indicator as allowed for `date`.
`gDay`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a Gregorian day that recurs, specifically a day of the month such as the fifth day of the month. A `gDay` is the space of a set of calendar dates. Specifically, it is a set of one-day long, monthly periodic instances. The pattern for `gDay` is `---DD` with optional time zone indicator as allowed for `date`.
`gMonth`	enumeration, pattern, minInclusive, minExclusive, maxInclusive, maxExclusive, whiteSpace	Represents a Gregorian month that recurs every year. A `gMonth` is the space of a set of calendar months. Specifically, it is a set of one-month long, yearly periodic instances. The pattern for `gMonth` is `--MM--` with optional time zone indicator as allowed for `date`.
`hexBinary`	length, pattern, maxLength, minLength, enumeration, whiteSpace	Represents arbitrary hex-encoded binary data. A `hexBinary` is the set of finite-length sequences of binary octets. Each binary octet is encoded as a character tuple, consisting of two hexadecimal digits ([0-9a-fA-F]) representing the octet code.
`base64Binary`	length, pattern, maxLength, minLength, enumeration, whiteSpace	Represents Base64-encoded arbitrary binary data. A `base64Binary` is the set of finite-length sequences of binary octets.
`anyURI`	length, pattern, maxLength, minLength, enumeration, whiteSpace	Represents a URI as defined by RFC 2396. An `anyURI` value can be absolute or relative, and may have an optional fragment identifier.
`QName`	length, enumeration, pattern, maxLength, minLength, whiteSpace	Represents a qualified name. A qualified name is composed of a prefix and a local name separated by a colon. Both the prefix and local names must be an NCName. The prefix must be associated with a namespace URI reference, using a namespace declaration.
`NOTATION`	length, enumeration, pattern, maxLength, minLength, whiteSpace	Represents a `NOTATION` attribute type. A set of QNames.

Primitive XML Data Types

See Also