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Units Markup language (UnitsML) Schema Documentation unitsmllite-v0.9.18

Schema Document Properties

Target Namespace
urn:oasis:names:tc:unitsml:schema:xsd:UnitsMLSchema_lite-0.9.18
Version
0.9.18
Element and Attribute Namespaces
  • Global element and attribute declarations belong to this schema's target namespace.
  • By default, local element declarations belong to this schema's target namespace.
  • By default, local attribute declarations have no namespace.
Schema Composition
  • This schema imports schema(s) from the following namespace(s):
    • http://www.w3.org/XML/1998/namespace (at http://www.w3.org/2001/xml.xsd)

Declared Namespaces:

Prefix
Namespace
Default namespace
urn:oasis:names:tc:unitsml:schema:xsd:UnitsMLSchema_lite-0.9.18
xml
http://www.w3.org/XML/1998/namespace
xsd
http://www.w3.org/2001/XMLSchema

Schema Component Representation

<xsd:schema targetNamespace="urn:oasis:names:tc:unitsml:schema:xsd:UnitsMLSchema_lite-0.9.18" elementFormDefault="qualified" attributeFormDefault="unqualified" version="0.9.18">
   <xsd:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="http://www.w3.org/2001/xml.xsd"/>
...
</xsd:schema>

Elements

Element: AmountOfSubstance

Type
AmountOfSubstanceType
Used By
DimensionType
Documentation

XML Instance Representation

<AmountOfSubstance
 symbol="N" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="AmountOfSubstance" type="AmountOfSubstanceType"/>

Element: Dimension

Type
DimensionType
Used By
DimensionSetType
Documentation

XML Instance Representation

<Dimension
 xml:id="" [1]
 dimensionless="xsd:boolean" [0..1] 
>
   Start Sequence [1..*] 
      <Length> ... </Length> [0..1]
      <Mass> ... </Mass> [0..1]
      <Time> ... </Time> [0..1]
      <ElectricCurrent> ... </ElectricCurrent> [0..1]
      <ThermodynamicTemperature> ... </ThermodynamicTemperature> [0..1]
      <AmountOfSubstance> ... </AmountOfSubstance> [0..1]
      <LuminousIntensity> ... </LuminousIntensity> [0..1]
   End Sequence
</Dimension>

Schema Component Representation

<xsd:element name="Dimension" type="DimensionType"/>

Element: DimensionSet

Type
DimensionSetType
Used By
UnitsMLType
Documentation

XML Instance Representation

<DimensionSet>
   <Dimension> ... </Dimension> [1..*] 
</DimensionSet>

Schema Component Representation

<xsd:element name="DimensionSet" type="DimensionSetType"/>

Element: ElectricCurrent

Type
ElectricCurrentType
Used By
DimensionType
Documentation

XML Instance Representation

<ElectricCurrent
 symbol="I" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="ElectricCurrent" type="ElectricCurrentType"/>

Element: EnumeratedRootUnit

Type
EnumeratedRootUnitType
Used By
RootUnitsType
Documentation

XML Instance Representation

<EnumeratedRootUnit
 unit="xsd:token (value comes from list: {'meter'|'gram'|'second'|'ampere'|'kelvin'|'mole'|'candela'|'radian'|'steradian'|'hertz'|'newton'|'pascal'|'joule'|'watt'|'coulomb'|'volt'|'farad'|'ohm'|'siemens'|'weber'|'tesla'|'henry'|'degree_Celsius'|'lumen'|'lux'|'katal'|'becquerel'|'gray'|'sievert'|'minute'|'hour'|'day'|'arc_degree'|'arc_minute'|'arc_second'|'liter'|'metric_ton'|'electronvolt'|'unified_atomic_mass_unit'|'astronomical_unit'|'atomic_unit_of_1st_hyperpolarizablity'|'atomic_unit_of_2nd_hyperpolarizablity'|'atomic_unit_of_action'|'atomic_unit_of_charge'|'atomic_unit_of_charge_density'|'atomic_unit_of_current'|'atomic_unit_of_electric_dipole_moment'|'atomic_unit_of_electric_field'|'atomic_unit_of_electric_field_gradient'|'atomic_unit_of_electric_polarizablity'|'atomic_unit_of_electric_potential'|'atomic_unit_of_electric_quadrupole_moment'|'atomic_unit_of_energy'|'atomic_unit_of_force'|'atomic_unit_of_length'|'atomic_unit_of_magnetic_dipole_moment'|'atomic_unit_of_magnetic_flux_density'|'atomic_unit_of_magnetizability'|'atomic_unit_of_mass'|'atomic_unit_of_momentum'|'atomic_unit_of_permittivity'|'atomic_unit_of_time'|'atomic_unit_of_velocity'|'natural_unit_of_action'|'natural_unit_of_action_in_eV_s'|'natural_unit_of_energy'|'natural_unit_of_energy_in_MeV'|'natural_unit_of_length'|'natural_unit_of_mass'|'natural_unit_of_momentum'|'natural_unit_of_momentum_in_MeV_per_c'|'natural_unit_of_time'|'natural_unit_of_velocity'|'nautical_mile'|'knot'|'angstrom'|'are'|'hectare'|'barn'|'bar'|'gal'|'curie'|'roentgen'|'rad'|'rem'|'erg'|'dyne'|'barye'|'poise'|'rhe'|'stokes'|'darcy'|'kayser'|'lambert'|'phot'|'thermo_calorie'|'table_calorie'|'debye'|'abampere'|'abcoulomb'|'abfarad'|'abhenry'|'abohm'|'abmho'|'abvolt'|'abwatt'|'maxwell'|'gauss'|'gilbert'|'oersted'|'stilb'|'statampere'|'statcoulomb'|'statfarad'|'stathenry'|'statohm'|'statmho'|'statvolt'|'statwatt'|'statweber'|'stattesla'|'long_ton'|'short_ton'|'gross_hundredweight'|'hundredweight'|'pound'|'ounce'|'dram'|'troy_pound'|'troy_ounce'|'pennyweight'|'apothecaries_dram'|'scruple'|'grain'|'slug'|'pound_force'|'poundal'|'kip'|'ton_force'|'kilogram_force'|'inch'|'foot'|'yard'|'mile'|'us_survey_inch'|'us_survey_foot'|'us_survey_yard'|'us_survey_fathom'|'us_survey_rod'|'us_survey_chain'|'us_survey_link'|'us_survey_furlong'|'us_survey_mile'|'us_acre'|'imperial_gallon'|'imperial_quart'|'imperial_pint'|'imperial_gill'|'imperial_ounce'|'us_gallon'|'us_quart'|'us_pint'|'us_cup'|'us_fill'|'us_fluid_ounce'|'us_fluid_dram'|'us_minim'|'us_tablespoon'|'us_teaspoon'|'us_bushel'|'us_peck'|'us_dry_quart'|'us_dry_pint'|'thermo_kg_calorie'|'table_kg_calorie'|'us_label_teaspoon'|'us_label_tablespoon'|'us_label_cup'|'us_label_fluid_ounce'|'us_label_ounce'|'horsepower'|'electric_horsepower'|'boiler_horsepower'|'metric_horsepower'|'water_horsepower'|'uk_horsepower'|'degree_Fahrenheit'|'degree_Rankine'|'torr'|'standard_atmosphere'|'technical_atmosphere'|'mm_Hg'|'cm_Hg'|'0C_cm_Hg'|'in_Hg'|'32F_in_Hg'|'60F_in_Hg'|'ft_Hg'|'mm_water'|'cm_water'|'4C_cm_water'|'in_water'|'39F_in_water'|'60F_in_water'|'ft_water'|'39F_ft_water'|'light_year'|'parsec'|'printers_pica'|'computer_pica'|'printers_point'|'computer_point'|'thermo_btu'|'table_btu'|'mean_btu'|'39F_btu'|'59F_btu'|'60F_btu'|'tons_of_tnt'|'ec_therm'|'us_therm'|'year_365'|'tropical_year'|'sidereal_year'|'sidereal_day'|'sidereal_hour'|'sidereal_minute'|'sidereal_second'|'shake'|'denier'|'tex'|'gon'|'nato_mil'|'pound_mole'|'ton_refrigeration'|'circular_mil'|'bel'|'neper'|'pH'|'petro_barrel'|'footlambert'|'footcandle'|'carat'})" [1] 
 sourceURL="xsd:anyURI" [0..1] 
 prefix="xsd:token (value comes from list: {'Y'|'Z'|'E'|'P'|'T'|'G'|'M'|'k'|'h'|'da'|'d'|'c'|'m'|'u'|'n'|'p'|'f'|'a'|'z'|'y'|'Ki'|'Mi'|'Gi'|'Ti'|'Pi'|'Ei'|'Zi'|'Yi'})" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="EnumeratedRootUnit" type="EnumeratedRootUnitType"/>

Element: Length

Type
LengthType
Used By
DimensionType
Documentation

XML Instance Representation

<Length
 symbol="L" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="Length" type="LengthType"/>

Element: LuminousIntensity

Type
LuminousIntensityType
Used By
DimensionType
Documentation

XML Instance Representation

<LuminousIntensity
 symbol="J" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="LuminousIntensity" type="LuminousIntensityType"/>

Element: Mass

Type
MassType
Used By
DimensionType
Documentation

XML Instance Representation

<Mass
 symbol="M" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="Mass" type="MassType"/>

Element: RootUnits

Type
RootUnitsType
Used By
UnitType
Documentation

XML Instance Representation

<RootUnits>
   <EnumeratedRootUnit> ... </EnumeratedRootUnit> [0..*] 
</RootUnits>

Schema Component Representation

<xsd:element name="RootUnits" type="RootUnitsType"/>

Element: ThermodynamicTemperature

Type
ThermodynamicTemperatureType
Used By
DimensionType
Documentation

XML Instance Representation

<ThermodynamicTemperature
 symbol="Θ" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="ThermodynamicTemperature" type="ThermodynamicTemperatureType"/>

Element: Time

Type
TimeType
Used By
DimensionType
Documentation

XML Instance Representation

<Time
 symbol="T" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:element name="Time" type="TimeType"/>

Element: Unit

Type
UnitType
Used By
UnitSetType
Documentation

XML Instance Representation

<Unit
 xml:id="" [1]
 dimensionURL="xsd:anyURI" [0..1] 
>
   <UnitName> ... </UnitName> [1..*]
   <UnitSymbol> ... </UnitSymbol> [0..*]
   <RootUnits> ... </RootUnits> [0..1] 
</Unit>

Schema Component Representation

<xsd:element name="Unit" type="UnitType"/>

Element: UnitName

Type
NameType
Used By
UnitType
Documentation

XML Instance Representation

<UnitName
 xml:lang="" [0..1]
>
    xsd:token
</UnitName>

Schema Component Representation

<xsd:element name="UnitName" type="NameType"/>

Element: UnitSet

Type
UnitSetType
Used By
UnitsMLType
Documentation

XML Instance Representation

<UnitSet>
   <Unit> ... </Unit> [1..*] 
</UnitSet>

Schema Component Representation

<xsd:element name="UnitSet" type="UnitSetType"/>

Element: UnitSymbol

Type
SymbolType
Used By
UnitType
Documentation

XML Instance Representation

<UnitSymbol
 type="anySimpleType" [1] 
>
   <!-- Mixed content -->
   Start Sequence [0..*]
      Allow any elements from any namespace (skip validation). [1..*]
   End Sequence
</UnitSymbol>

Schema Component Representation

<xsd:element name="UnitSymbol" type="SymbolType"/>

Element: UnitsML

Type
UnitsMLType
Documentation

XML Instance Representation

<UnitsML>
   <UnitSet> ... </UnitSet> [0..1]
   <DimensionSet> ... </DimensionSet> [0..1]
</UnitsML>

Schema Component Representation

<xsd:element name="UnitsML" type="UnitsMLType"/>

Complex Types

Complex Type: AmountOfSubstanceType

Used By
AmountOfSubstance
Documentation

XML Instance Representation

<...
 symbol="N" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="AmountOfSubstanceType">
   <xsd:attribute name="symbol" type="xsd:token" use="optional" fixed="N"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: DimensionSetType

Used By
DimensionSet
Documentation

XML Instance Representation

<...>
   <Dimension> ... </Dimension> [1..*] 
</...>

Schema Component Representation

<xsd:complexType name="DimensionSetType">
   <xsd:sequence>
      <xsd:element ref="Dimension" maxOccurs="unbounded"/>
   </xsd:sequence>
</xsd:complexType>

Complex Type: DimensionType

Used By
Dimension
Documentation

XML Instance Representation

<...
 xml:id="" [1]
 dimensionless="xsd:boolean" [0..1] 
>
   Start Sequence [1..*] 
      <Length> ... </Length> [0..1]
      <Mass> ... </Mass> [0..1]
      <Time> ... </Time> [0..1]
      <ElectricCurrent> ... </ElectricCurrent> [0..1]
      <ThermodynamicTemperature> ... </ThermodynamicTemperature> [0..1]
      <AmountOfSubstance> ... </AmountOfSubstance> [0..1]
      <LuminousIntensity> ... </LuminousIntensity> [0..1]
   End Sequence
</...>

Schema Component Representation

<xsd:complexType name="DimensionType">
   <xsd:sequence maxOccurs="unbounded">
      <xsd:element ref="Length" minOccurs="0"/>
      <xsd:element ref="Mass" minOccurs="0"/>
      <xsd:element ref="Time" minOccurs="0"/>
      <xsd:element ref="ElectricCurrent" minOccurs="0"/>
      <xsd:element ref="ThermodynamicTemperature" minOccurs="0"/>
      <xsd:element ref="AmountOfSubstance" minOccurs="0"/>
      <xsd:element ref="LuminousIntensity" minOccurs="0"/>
   </xsd:sequence>
   <xsd:attribute ref="xml:id" use="required"/>
   <xsd:attribute name="dimensionless" type="xsd:boolean" use="optional" default="0"/>
</xsd:complexType>

Complex Type: ElectricCurrentType

Used By
ElectricCurrent
Documentation

XML Instance Representation

<...
 symbol="I" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="ElectricCurrentType">
   <xsd:attribute name="symbol" type="xsd:token" use="optional" fixed="I"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: EnumeratedRootUnitType

Used By
EnumeratedRootUnit
Documentation

XML Instance Representation

<...
 unit="xsd:token (value comes from list: {'meter'|'gram'|'second'|'ampere'|'kelvin'|'mole'|'candela'|'radian'|'steradian'|'hertz'|'newton'|'pascal'|'joule'|'watt'|'coulomb'|'volt'|'farad'|'ohm'|'siemens'|'weber'|'tesla'|'henry'|'degree_Celsius'|'lumen'|'lux'|'katal'|'becquerel'|'gray'|'sievert'|'minute'|'hour'|'day'|'arc_degree'|'arc_minute'|'arc_second'|'liter'|'metric_ton'|'electronvolt'|'unified_atomic_mass_unit'|'astronomical_unit'|'atomic_unit_of_1st_hyperpolarizablity'|'atomic_unit_of_2nd_hyperpolarizablity'|'atomic_unit_of_action'|'atomic_unit_of_charge'|'atomic_unit_of_charge_density'|'atomic_unit_of_current'|'atomic_unit_of_electric_dipole_moment'|'atomic_unit_of_electric_field'|'atomic_unit_of_electric_field_gradient'|'atomic_unit_of_electric_polarizablity'|'atomic_unit_of_electric_potential'|'atomic_unit_of_electric_quadrupole_moment'|'atomic_unit_of_energy'|'atomic_unit_of_force'|'atomic_unit_of_length'|'atomic_unit_of_magnetic_dipole_moment'|'atomic_unit_of_magnetic_flux_density'|'atomic_unit_of_magnetizability'|'atomic_unit_of_mass'|'atomic_unit_of_momentum'|'atomic_unit_of_permittivity'|'atomic_unit_of_time'|'atomic_unit_of_velocity'|'natural_unit_of_action'|'natural_unit_of_action_in_eV_s'|'natural_unit_of_energy'|'natural_unit_of_energy_in_MeV'|'natural_unit_of_length'|'natural_unit_of_mass'|'natural_unit_of_momentum'|'natural_unit_of_momentum_in_MeV_per_c'|'natural_unit_of_time'|'natural_unit_of_velocity'|'nautical_mile'|'knot'|'angstrom'|'are'|'hectare'|'barn'|'bar'|'gal'|'curie'|'roentgen'|'rad'|'rem'|'erg'|'dyne'|'barye'|'poise'|'rhe'|'stokes'|'darcy'|'kayser'|'lambert'|'phot'|'thermo_calorie'|'table_calorie'|'debye'|'abampere'|'abcoulomb'|'abfarad'|'abhenry'|'abohm'|'abmho'|'abvolt'|'abwatt'|'maxwell'|'gauss'|'gilbert'|'oersted'|'stilb'|'statampere'|'statcoulomb'|'statfarad'|'stathenry'|'statohm'|'statmho'|'statvolt'|'statwatt'|'statweber'|'stattesla'|'long_ton'|'short_ton'|'gross_hundredweight'|'hundredweight'|'pound'|'ounce'|'dram'|'troy_pound'|'troy_ounce'|'pennyweight'|'apothecaries_dram'|'scruple'|'grain'|'slug'|'pound_force'|'poundal'|'kip'|'ton_force'|'kilogram_force'|'inch'|'foot'|'yard'|'mile'|'us_survey_inch'|'us_survey_foot'|'us_survey_yard'|'us_survey_fathom'|'us_survey_rod'|'us_survey_chain'|'us_survey_link'|'us_survey_furlong'|'us_survey_mile'|'us_acre'|'imperial_gallon'|'imperial_quart'|'imperial_pint'|'imperial_gill'|'imperial_ounce'|'us_gallon'|'us_quart'|'us_pint'|'us_cup'|'us_fill'|'us_fluid_ounce'|'us_fluid_dram'|'us_minim'|'us_tablespoon'|'us_teaspoon'|'us_bushel'|'us_peck'|'us_dry_quart'|'us_dry_pint'|'thermo_kg_calorie'|'table_kg_calorie'|'us_label_teaspoon'|'us_label_tablespoon'|'us_label_cup'|'us_label_fluid_ounce'|'us_label_ounce'|'horsepower'|'electric_horsepower'|'boiler_horsepower'|'metric_horsepower'|'water_horsepower'|'uk_horsepower'|'degree_Fahrenheit'|'degree_Rankine'|'torr'|'standard_atmosphere'|'technical_atmosphere'|'mm_Hg'|'cm_Hg'|'0C_cm_Hg'|'in_Hg'|'32F_in_Hg'|'60F_in_Hg'|'ft_Hg'|'mm_water'|'cm_water'|'4C_cm_water'|'in_water'|'39F_in_water'|'60F_in_water'|'ft_water'|'39F_ft_water'|'light_year'|'parsec'|'printers_pica'|'computer_pica'|'printers_point'|'computer_point'|'thermo_btu'|'table_btu'|'mean_btu'|'39F_btu'|'59F_btu'|'60F_btu'|'tons_of_tnt'|'ec_therm'|'us_therm'|'year_365'|'tropical_year'|'sidereal_year'|'sidereal_day'|'sidereal_hour'|'sidereal_minute'|'sidereal_second'|'shake'|'denier'|'tex'|'gon'|'nato_mil'|'pound_mole'|'ton_refrigeration'|'circular_mil'|'bel'|'neper'|'pH'|'petro_barrel'|'footlambert'|'footcandle'|'carat'})" [1] 
 sourceURL="xsd:anyURI" [0..1] 
 prefix="xsd:token (value comes from list: {'Y'|'Z'|'E'|'P'|'T'|'G'|'M'|'k'|'h'|'da'|'d'|'c'|'m'|'u'|'n'|'p'|'f'|'a'|'z'|'y'|'Ki'|'Mi'|'Gi'|'Ti'|'Pi'|'Ei'|'Zi'|'Yi'})" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="EnumeratedRootUnitType">
   <xsd:attribute name="unit" use="required">
      <xsd:simpleType>
         <xsd:restriction base="xsd:token">
            <xsd:enumeration value="meter"/>
            <xsd:enumeration value="gram"/>
            <xsd:enumeration value="second"/>
            <xsd:enumeration value="ampere"/>
            <xsd:enumeration value="kelvin"/>
            <xsd:enumeration value="mole"/>
            <xsd:enumeration value="candela"/>
            <xsd:enumeration value="radian"/>
            <xsd:enumeration value="steradian"/>
            <xsd:enumeration value="hertz"/>
            <xsd:enumeration value="newton"/>
            <xsd:enumeration value="pascal"/>
            <xsd:enumeration value="joule"/>
            <xsd:enumeration value="watt"/>
            <xsd:enumeration value="coulomb"/>
            <xsd:enumeration value="volt"/>
            <xsd:enumeration value="farad"/>
            <xsd:enumeration value="ohm"/>
            <xsd:enumeration value="siemens"/>
            <xsd:enumeration value="weber"/>
            <xsd:enumeration value="tesla"/>
            <xsd:enumeration value="henry"/>
            <xsd:enumeration value="degree_Celsius"/>
            <xsd:enumeration value="lumen"/>
            <xsd:enumeration value="lux"/>
            <xsd:enumeration value="katal"/>
            <xsd:enumeration value="becquerel"/>
            <xsd:enumeration value="gray"/>
            <xsd:enumeration value="sievert"/>
            <xsd:enumeration value="minute"/>
            <xsd:enumeration value="hour"/>
            <xsd:enumeration value="day"/>
            <xsd:enumeration value="arc_degree"/>
            <xsd:enumeration value="arc_minute"/>
            <xsd:enumeration value="arc_second"/>
            <xsd:enumeration value="liter"/>
            <xsd:enumeration value="metric_ton"/>
            <xsd:enumeration value="electronvolt"/>
            <xsd:enumeration value="unified_atomic_mass_unit"/>
            <xsd:enumeration value="astronomical_unit"/>
            <xsd:enumeration value="atomic_unit_of_1st_hyperpolarizablity"/>
            <xsd:enumeration value="atomic_unit_of_2nd_hyperpolarizablity"/>
            <xsd:enumeration value="atomic_unit_of_action"/>
            <xsd:enumeration value="atomic_unit_of_charge"/>
            <xsd:enumeration value="atomic_unit_of_charge_density"/>
            <xsd:enumeration value="atomic_unit_of_current"/>
            <xsd:enumeration value="atomic_unit_of_electric_dipole_moment"/>
            <xsd:enumeration value="atomic_unit_of_electric_field"/>
            <xsd:enumeration value="atomic_unit_of_electric_field_gradient"/>
            <xsd:enumeration value="atomic_unit_of_electric_polarizablity"/>
            <xsd:enumeration value="atomic_unit_of_electric_potential"/>
            <xsd:enumeration value="atomic_unit_of_electric_quadrupole_moment"/>
            <xsd:enumeration value="atomic_unit_of_energy"/>
            <xsd:enumeration value="atomic_unit_of_force"/>
            <xsd:enumeration value="atomic_unit_of_length"/>
            <xsd:enumeration value="atomic_unit_of_magnetic_dipole_moment"/>
            <xsd:enumeration value="atomic_unit_of_magnetic_flux_density"/>
            <xsd:enumeration value="atomic_unit_of_magnetizability"/>
            <xsd:enumeration value="atomic_unit_of_mass"/>
            <xsd:enumeration value="atomic_unit_of_momentum"/>
            <xsd:enumeration value="atomic_unit_of_permittivity"/>
            <xsd:enumeration value="atomic_unit_of_time"/>
            <xsd:enumeration value="atomic_unit_of_velocity"/>
            <xsd:enumeration value="natural_unit_of_action"/>
            <xsd:enumeration value="natural_unit_of_action_in_eV_s"/>
            <xsd:enumeration value="natural_unit_of_energy"/>
            <xsd:enumeration value="natural_unit_of_energy_in_MeV"/>
            <xsd:enumeration value="natural_unit_of_length"/>
            <xsd:enumeration value="natural_unit_of_mass"/>
            <xsd:enumeration value="natural_unit_of_momentum"/>
            <xsd:enumeration value="natural_unit_of_momentum_in_MeV_per_c"/>
            <xsd:enumeration value="natural_unit_of_time"/>
            <xsd:enumeration value="natural_unit_of_velocity"/>
            <xsd:enumeration value="nautical_mile"/>
            <xsd:enumeration value="knot"/>
            <xsd:enumeration value="angstrom"/>
            <xsd:enumeration value="are"/>
            <xsd:enumeration value="hectare"/>
            <xsd:enumeration value="barn"/>
            <xsd:enumeration value="bar"/>
            <xsd:enumeration value="gal"/>
            <xsd:enumeration value="curie"/>
            <xsd:enumeration value="roentgen"/>
            <xsd:enumeration value="rad"/>
            <xsd:enumeration value="rem"/>
            <xsd:enumeration value="erg"/>
            <xsd:enumeration value="dyne"/>
            <xsd:enumeration value="barye"/>
            <xsd:enumeration value="poise"/>
            <xsd:enumeration value="rhe"/>
            <xsd:enumeration value="stokes"/>
            <xsd:enumeration value="darcy"/>
            <xsd:enumeration value="kayser"/>
            <xsd:enumeration value="lambert"/>
            <xsd:enumeration value="phot"/>
            <xsd:enumeration value="thermo_calorie"/>
            <xsd:enumeration value="table_calorie"/>
            <xsd:enumeration value="debye"/>
            <xsd:enumeration value="abampere"/>
            <xsd:enumeration value="abcoulomb"/>
            <xsd:enumeration value="abfarad"/>
            <xsd:enumeration value="abhenry"/>
            <xsd:enumeration value="abohm"/>
            <xsd:enumeration value="abmho"/>
            <xsd:enumeration value="abvolt"/>
            <xsd:enumeration value="abwatt"/>
            <xsd:enumeration value="maxwell"/>
            <xsd:enumeration value="gauss"/>
            <xsd:enumeration value="gilbert"/>
            <xsd:enumeration value="oersted"/>
            <xsd:enumeration value="stilb"/>
            <xsd:enumeration value="statampere"/>
            <xsd:enumeration value="statcoulomb"/>
            <xsd:enumeration value="statfarad"/>
            <xsd:enumeration value="stathenry"/>
            <xsd:enumeration value="statohm"/>
            <xsd:enumeration value="statmho"/>
            <xsd:enumeration value="statvolt"/>
            <xsd:enumeration value="statwatt"/>
            <xsd:enumeration value="statweber"/>
            <xsd:enumeration value="stattesla"/>
            <xsd:enumeration value="long_ton"/>
            <xsd:enumeration value="short_ton"/>
            <xsd:enumeration value="gross_hundredweight"/>
            <xsd:enumeration value="hundredweight"/>
            <xsd:enumeration value="pound"/>
            <xsd:enumeration value="ounce"/>
            <xsd:enumeration value="dram"/>
            <xsd:enumeration value="troy_pound"/>
            <xsd:enumeration value="troy_ounce"/>
            <xsd:enumeration value="pennyweight"/>
            <xsd:enumeration value="apothecaries_dram"/>
            <xsd:enumeration value="scruple"/>
            <xsd:enumeration value="grain"/>
            <xsd:enumeration value="slug"/>
            <xsd:enumeration value="pound_force"/>
            <xsd:enumeration value="poundal"/>
            <xsd:enumeration value="kip"/>
            <xsd:enumeration value="ton_force"/>
            <xsd:enumeration value="kilogram_force"/>
            <xsd:enumeration value="inch"/>
            <xsd:enumeration value="foot"/>
            <xsd:enumeration value="yard"/>
            <xsd:enumeration value="mile"/>
            <xsd:enumeration value="us_survey_inch"/>
            <xsd:enumeration value="us_survey_foot"/>
            <xsd:enumeration value="us_survey_yard"/>
            <xsd:enumeration value="us_survey_fathom"/>
            <xsd:enumeration value="us_survey_rod"/>
            <xsd:enumeration value="us_survey_chain"/>
            <xsd:enumeration value="us_survey_link"/>
            <xsd:enumeration value="us_survey_furlong"/>
            <xsd:enumeration value="us_survey_mile"/>
            <xsd:enumeration value="us_acre"/>
            <xsd:enumeration value="imperial_gallon"/>
            <xsd:enumeration value="imperial_quart"/>
            <xsd:enumeration value="imperial_pint"/>
            <xsd:enumeration value="imperial_gill"/>
            <xsd:enumeration value="imperial_ounce"/>
            <xsd:enumeration value="us_gallon"/>
            <xsd:enumeration value="us_quart"/>
            <xsd:enumeration value="us_pint"/>
            <xsd:enumeration value="us_cup"/>
            <xsd:enumeration value="us_fill"/>
            <xsd:enumeration value="us_fluid_ounce"/>
            <xsd:enumeration value="us_fluid_dram"/>
            <xsd:enumeration value="us_minim"/>
            <xsd:enumeration value="us_tablespoon"/>
            <xsd:enumeration value="us_teaspoon"/>
            <xsd:enumeration value="us_bushel"/>
            <xsd:enumeration value="us_peck"/>
            <xsd:enumeration value="us_dry_quart"/>
            <xsd:enumeration value="us_dry_pint"/>
            <xsd:enumeration value="thermo_kg_calorie"/>
            <xsd:enumeration value="table_kg_calorie"/>
            <xsd:enumeration value="us_label_teaspoon"/>
            <xsd:enumeration value="us_label_tablespoon"/>
            <xsd:enumeration value="us_label_cup"/>
            <xsd:enumeration value="us_label_fluid_ounce"/>
            <xsd:enumeration value="us_label_ounce"/>
            <xsd:enumeration value="horsepower"/>
            <xsd:enumeration value="electric_horsepower"/>
            <xsd:enumeration value="boiler_horsepower"/>
            <xsd:enumeration value="metric_horsepower"/>
            <xsd:enumeration value="water_horsepower"/>
            <xsd:enumeration value="uk_horsepower"/>
            <xsd:enumeration value="degree_Fahrenheit"/>
            <xsd:enumeration value="degree_Rankine"/>
            <xsd:enumeration value="torr"/>
            <xsd:enumeration value="standard_atmosphere"/>
            <xsd:enumeration value="technical_atmosphere"/>
            <xsd:enumeration value="mm_Hg"/>
            <xsd:enumeration value="cm_Hg"/>
            <xsd:enumeration value="0C_cm_Hg"/>
            <xsd:enumeration value="in_Hg"/>
            <xsd:enumeration value="32F_in_Hg"/>
            <xsd:enumeration value="60F_in_Hg"/>
            <xsd:enumeration value="ft_Hg"/>
            <xsd:enumeration value="mm_water"/>
            <xsd:enumeration value="cm_water"/>
            <xsd:enumeration value="4C_cm_water"/>
            <xsd:enumeration value="in_water"/>
            <xsd:enumeration value="39F_in_water"/>
            <xsd:enumeration value="60F_in_water"/>
            <xsd:enumeration value="ft_water"/>
            <xsd:enumeration value="39F_ft_water"/>
            <xsd:enumeration value="light_year"/>
            <xsd:enumeration value="parsec"/>
            <xsd:enumeration value="printers_pica"/>
            <xsd:enumeration value="computer_pica"/>
            <xsd:enumeration value="printers_point"/>
            <xsd:enumeration value="computer_point"/>
            <xsd:enumeration value="thermo_btu"/>
            <xsd:enumeration value="table_btu"/>
            <xsd:enumeration value="mean_btu"/>
            <xsd:enumeration value="39F_btu"/>
            <xsd:enumeration value="59F_btu"/>
            <xsd:enumeration value="60F_btu"/>
            <xsd:enumeration value="tons_of_tnt"/>
            <xsd:enumeration value="ec_therm"/>
            <xsd:enumeration value="us_therm"/>
            <xsd:enumeration value="year_365"/>
            <xsd:enumeration value="tropical_year"/>
            <xsd:enumeration value="sidereal_year"/>
            <xsd:enumeration value="sidereal_day"/>
            <xsd:enumeration value="sidereal_hour"/>
            <xsd:enumeration value="sidereal_minute"/>
            <xsd:enumeration value="sidereal_second"/>
            <xsd:enumeration value="shake"/>
            <xsd:enumeration value="denier"/>
            <xsd:enumeration value="tex"/>
            <xsd:enumeration value="gon"/>
            <xsd:enumeration value="nato_mil"/>
            <xsd:enumeration value="pound_mole"/>
            <xsd:enumeration value="ton_refrigeration"/>
            <xsd:enumeration value="circular_mil"/>
            <xsd:enumeration value="bel"/>
            <xsd:enumeration value="neper"/>
            <xsd:enumeration value="pH"/>
            <xsd:enumeration value="petro_barrel"/>
            <xsd:enumeration value="footlambert"/>
            <xsd:enumeration value="footcandle"/>
            <xsd:enumeration value="carat"/>
         </xsd:restriction>
      </xsd:simpleType>
   </xsd:attribute>
   <xsd:attributeGroup ref="sourceURL"/>
   <xsd:attributeGroup ref="prefix"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: LengthType

Used By
Length
Documentation

XML Instance Representation

<...
 symbol="L" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="LengthType">
   <xsd:attribute name="symbol" type="xsd:token" use="optional" fixed="L"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: LuminousIntensityType

Used By
LuminousIntensity
Documentation

XML Instance Representation

<...
 symbol="J" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="LuminousIntensityType">
   <xsd:attribute name="symbol" type="xsd:token" use="optional" fixed="J"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: MassType

Used By
Mass
Documentation

XML Instance Representation

<...
 symbol="M" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="MassType">
   <xsd:attribute name="symbol" type="xsd:token" use="optional" fixed="M"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: NameType

Type hierarchy:

Super-types:
xsd:token < NameType (by extension)
Used By
UnitName
Documentation

XML Instance Representation

<...
 xml:lang="" [0..1]
>
    xsd:token
</...>

Schema Component Representation

<xsd:complexType name="NameType">
   <xsd:simpleContent>
      <xsd:extension base="xsd:token">
         <xsd:attribute ref="xml:lang"/>
      </xsd:extension>
   </xsd:simpleContent>
</xsd:complexType>

Complex Type: RootUnitsType

Used By
RootUnits
Documentation

XML Instance Representation

<...>
   <EnumeratedRootUnit> ... </EnumeratedRootUnit> [0..*] 
</...>

Schema Component Representation

<xsd:complexType name="RootUnitsType">
   <xsd:sequence>
      <xsd:element ref="EnumeratedRootUnit" minOccurs="0" maxOccurs="unbounded"/>
   </xsd:sequence>
</xsd:complexType>

Complex Type: SymbolType

Used By
UnitSymbol
Documentation

XML Instance Representation

<...
 type="anySimpleType" [1] 
>
   <!-- Mixed content -->
   Start Sequence [0..*]
      Allow any elements from any namespace (skip validation). [1..*]
   End Sequence
</...>

Schema Component Representation

<xsd:complexType name="SymbolType" mixed="true">
   <xsd:sequence minOccurs="0" maxOccurs="unbounded">
      <xsd:any processContents="skip" maxOccurs="unbounded"/>
   </xsd:sequence>
   <xsd:attribute name="type" use="required"/>
</xsd:complexType>

Complex Type: ThermodynamicTemperatureType

Used By
ThermodynamicTemperature
Documentation

XML Instance Representation

<...
 symbol="Θ" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="ThermodynamicTemperatureType">
   <xsd:attribute name="symbol" type="xsd:token" use="optional" fixed="Θ"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: TimeType

Used By
Time
Documentation

XML Instance Representation

<...
 symbol="T" [0..1] 
 powerNumerator="xsd:byte" [0..1] 
/> 

Schema Component Representation

<xsd:complexType name="TimeType">
   <xsd:attribute name="symbol" type="xsd:token" use="optional" fixed="T"/>
   <xsd:attributeGroup ref="powerRational"/>
</xsd:complexType>

Complex Type: UnitSetType

Used By
UnitSet
Documentation

XML Instance Representation

<...>
   <Unit> ... </Unit> [1..*] 
</...>

Schema Component Representation

<xsd:complexType name="UnitSetType">
   <xsd:sequence>
      <xsd:element ref="Unit" maxOccurs="unbounded"/>
   </xsd:sequence>
</xsd:complexType>

Complex Type: UnitType

Used By
Unit
Documentation

XML Instance Representation

<...
 xml:id="" [1]
 dimensionURL="xsd:anyURI" [0..1] 
>
   <UnitName> ... </UnitName> [1..*]
   <UnitSymbol> ... </UnitSymbol> [0..*]
   <RootUnits> ... </RootUnits> [0..1] 
</...>

Schema Component Representation

<xsd:complexType name="UnitType">
   <xsd:sequence>
      <xsd:element ref="UnitName" maxOccurs="unbounded"/>
      <xsd:element ref="UnitSymbol" minOccurs="0" maxOccurs="unbounded"/>
      <xsd:element ref="RootUnits" minOccurs="0"/>
   </xsd:sequence>
   <xsd:attribute ref="xml:id" use="required"/>
   <xsd:attributeGroup ref="dimensionURL"/>
</xsd:complexType>

Complex Type: UnitsMLType

Used By
UnitsML
Documentation

XML Instance Representation

<...>
   <UnitSet> ... </UnitSet> [0..1]
   <DimensionSet> ... </DimensionSet> [0..1]
</...>

Schema Component Representation

<xsd:complexType name="UnitsMLType">
   <xsd:sequence>
      <xsd:element ref="UnitSet" minOccurs="0"/>
      <xsd:element ref="DimensionSet" minOccurs="0"/>
   </xsd:sequence>
</xsd:complexType>

Attribute Groups

Attribute Group: dimensionURL

Used By
UnitType
Documentation

XML Instance Representation

dimensionURL="xsd:anyURI" [0..1] 

Schema Component Representation

<xsd:attributeGroup name="dimensionURL">
   <xsd:attribute name="dimensionURL" type="xsd:anyURI"/>
</xsd:attributeGroup>

Attribute Group: initialUnit

Documentation

XML Instance Representation

initialUnit="xsd:anyURI" [1] 

Schema Component Representation

<xsd:attributeGroup name="initialUnit">
   <xsd:attribute name="initialUnit" type="xsd:anyURI" use="required"/>
</xsd:attributeGroup>

Attribute Group: powerRational

Used By
EnumeratedRootUnitType, LengthType, MassType, TimeType, ElectricCurrentType, ThermodynamicTemperatureType, AmountOfSubstanceType, LuminousIntensityType
Documentation

XML Instance Representation

powerNumerator="xsd:byte" [0..1] 

Schema Component Representation

<xsd:attributeGroup name="powerRational">
   <xsd:attribute name="powerNumerator" type="xsd:byte" use="optional" default="1"/>
</xsd:attributeGroup>

Attribute Group: prefix

Used By
EnumeratedRootUnitType
Documentation

XML Instance Representation

prefix="xsd:token (value comes from list: {'Y'|'Z'|'E'|'P'|'T'|'G'|'M'|'k'|'h'|'da'|'d'|'c'|'m'|'u'|'n'|'p'|'f'|'a'|'z'|'y'|'Ki'|'Mi'|'Gi'|'Ti'|'Pi'|'Ei'|'Zi'|'Yi'})" [0..1] 

Schema Component Representation

<xsd:attributeGroup name="prefix">
   <xsd:attribute name="prefix">
      <xsd:simpleType>
         <xsd:restriction base="xsd:token">
            <xsd:enumeration value="Y"/>
            <xsd:enumeration value="Z"/>
            <xsd:enumeration value="E"/>
            <xsd:enumeration value="P"/>
            <xsd:enumeration value="T"/>
            <xsd:enumeration value="G"/>
            <xsd:enumeration value="M"/>
            <xsd:enumeration value="k"/>
            <xsd:enumeration value="h"/>
            <xsd:enumeration value="da"/>
            <xsd:enumeration value="d"/>
            <xsd:enumeration value="c"/>
            <xsd:enumeration value="m"/>
            <xsd:enumeration value="u"/>
            <xsd:enumeration value="n"/>
            <xsd:enumeration value="p"/>
            <xsd:enumeration value="f"/>
            <xsd:enumeration value="a"/>
            <xsd:enumeration value="z"/>
            <xsd:enumeration value="y"/>
            <xsd:enumeration value="Ki"/>
            <xsd:enumeration value="Mi"/>
            <xsd:enumeration value="Gi"/>
            <xsd:enumeration value="Ti"/>
            <xsd:enumeration value="Pi"/>
            <xsd:enumeration value="Ei"/>
            <xsd:enumeration value="Zi"/>
            <xsd:enumeration value="Yi"/>
         </xsd:restriction>
      </xsd:simpleType>
   </xsd:attribute>
</xsd:attributeGroup>

Attribute Group: sourceName

Documentation

XML Instance Representation

sourceName="xsd:string" [0..1] 

Schema Component Representation

<xsd:attributeGroup name="sourceName">
   <xsd:attribute name="sourceName" type="xsd:string" use="optional"/>
</xsd:attributeGroup>

Attribute Group: sourceURL

Used By
EnumeratedRootUnitType
Documentation

XML Instance Representation

sourceURL="xsd:anyURI" [0..1] 

Schema Component Representation

<xsd:attributeGroup name="sourceURL">
   <xsd:attribute name="sourceURL" type="xsd:anyURI" use="optional"/>
</xsd:attributeGroup>

Glossary

Abstract (Applies to complex type definitions and element declarations). An abstract element or complex type cannot used to validate an element instance. If there is a reference to an abstract element, only element declarations that can substitute the abstract element can be used to validate the instance. For references to abstract type definitions, only derived types can be used.

All Model Group Child elements can be provided in any order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-all.

Choice Model Group Only one from the list of child elements and model groups can be provided in instances. See: http://www.w3.org/TR/xmlschema-1/#element-choice.

Collapse Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32). Then, collapse contiguous sequences of space characters into single space character, and remove leading and trailing space characters.

Disallowed Substitutions (Applies to element declarations). If substitution is specified, then substitution group members cannot be used in place of the given element declaration to validate element instances. If derivation methods, e.g. extension, restriction, are specified, then the given element declaration will not validate element instances that have types derived from the element declaration's type using the specified derivation methods. Normally, element instances can override their declaration's type by specifying an xsi:type attribute.

Key Constraint Like Uniqueness Constraint, but additionally requires that the specified value(s) must be provided. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Key Reference Constraint Ensures that the specified value(s) must match value(s) from a Key Constraint or Uniqueness Constraint. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Model Group Groups together element content, specifying the order in which the element content can occur and the number of times the group of element content may be repeated. See: http://www.w3.org/TR/xmlschema-1/#Model_Groups.

Nillable (Applies to element declarations). If an element declaration is nillable, instances can use the xsi:nil attribute. The xsi:nil attribute is the boolean attribute, nil, from the http://www.w3.org/2001/XMLSchema-instance namespace. If an element instance has an xsi:nil attribute set to true, it can be left empty, even though its element declaration may have required content.

Notation A notation is used to identify the format of a piece of data. Values of elements and attributes that are of type, NOTATION, must come from the names of declared notations. See: http://www.w3.org/TR/xmlschema-1/#cNotation_Declarations.

Preserve Whitespace Policy Preserve whitespaces exactly as they appear in instances.

Prohibited Derivations (Applies to type definitions). Derivation methods that cannot be used to create sub-types from a given type definition.

Prohibited Substitutions (Applies to complex type definitions). Prevents sub-types that have been derived using the specified derivation methods from validating element instances in place of the given type definition.

Replace Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32).

Sequence Model Group Child elements and model groups must be provided in the specified order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-sequence.

Substitution Group Elements that are members of a substitution group can be used wherever the head element of the substitution group is referenced.

Substitution Group Exclusions (Applies to element declarations). Prohibits element declarations from nominating themselves as being able to substitute a given element declaration, if they have types that are derived from the original element's type using the specified derivation methods.

Target Namespace The target namespace identifies the namespace that components in this schema belongs to. If no target namespace is provided, then the schema components do not belong to any namespace.

Uniqueness Constraint Ensures uniqueness of an element/attribute value, or a combination of values, within a specified scope. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.