Real Attributes of Physical Quantities

Database Management Reference Manual

Attributes : Real Attributes of Physical Quantities

Real attributes can be purely numeric, but often they may be representing physical quantities. The type of a physical quantity is its (physical) dimension.

Attributes of physical quantities are consistently stored in the database in defined database units, irrespective of the current working units, or of the units of any value entered by you. The whole system operates on the expectation that all stored values of physically dimensioned quantities are in their relevant standard database units.

The following table lists the dimensions understood by the system giving:

Their name (or description) recognised by the system,

The assigned hashcode,

The database storage units.

Supported standard units for the quantity

For example attributes of length have a hash code of DIST are stored in mm and other standard units include inch, cm, ft, metre etc.


Name of Dimension	HashCode/Word	Database Units	Other Specific Units	Comments
AbsPressure	ABSP	pascal	bar atm PSI torr mmHg inHg	pressure may be absolute or gauge
Acceleration	ACCL	m/s2
ActualPower	ACTPOW	V.A
Angle	ANGL	degree	grade arcmin arcsec
AngularAcceleration	ANGCCE	rad/s2
AngularFrequency	ANGF	deg/s	rpm rps rph angFreqHertz
AngularMomentum	ANGM	N.m.s
Area	SQDI	mm2	acre hectare
AreaPerLength	AREALE	m2/m	AreaPerLength
Bore	BORE	mm	in	Range of bore units limited to mm and inch (and Finch)
CableSize	CABL	kcmil	cirmil circmms
CalorificValueMole	CALVQ	J/Mol
CalorificValueVolume	CALVV	J/m3
Capacitance	CAPA	farad
Charge	CHAR	coulomb
Conductance	COND	siemens	mho
Content	PCUD	mm-3
ConvertiblePressure	PRESC	cpascala	cpascalg cbarg catmg cpsig ctorrg cmmHgg cinHgg cbara catma cpsia ctorra cmmHga cinHga osia inHgaAtSixtyDegF mmHgaAtSixtyDegF inWateraAtSixtyDegF inWateraAtFourDegC ftWateraAtSixtyDegF ftWateraAtFourDegC ata
Currency	CURY	USD	GBP EUR
Current	CURR	ampere
CurrentDensity	CURITY	A/m2
Density	DENS	kg/m3
DensityMANDB	MAND	kg/mm3		densities stored in MANU database
EffectiveHeatCapacity	EFFCAP	J/m/K
ElectricChargeDensity	ELECSI	C/m3
ElectricConductivity	CNDT	S/m
ElectricField	EFLD	V/m
ElectricFluxDensity	ELEFSI	C/m2
EMF	EMF	volt
Energy	ENER	kWh	joule BTU calorie calorieit BTUit chu chuAtFifteenDegC
EnergyDensity	EDEN	J/kg
Entropy	ENTR	J/K
Equivalence	EQUIVA	equivalent
EquivalenceFlow	EQULOW	equiv/s
EquivalencePerVolume	EQPRME	equiv/m3
FlowRateMolePerLength	SQPTD	Mol/s/m
FlowRateVolPerRpm	FRVPR
Force	FORC	newton	pdl dyne kgf lbf
FoulingFactor	FFAC	m2.K/W
Frequency	FREQ	hertz	freqRpm freqRps freqRph
GaugePressure	GAGE	pascal	bar atm PSI torr mmHg inHg	pressure may be absolute or gauge
HeatCoefficientArea	HEAREA	W/K
HeatFluxLinear	HEAEAR	W/m
HeatingValue	HVAL	J/m3
HeatOfReaction	HEAION	J/m3/h
HeatTransferCoeff	HTRA	W/m2/K
Illuminance	ILLUMI	lux
Impedance	IMPE	ohm
Inductance	INDU	henry
Inertia	INER	kg/m2
InversePressure	INVURE	pascal-1
InverseTemperature	INVRAT	kelvin-1
KinematicViscosity	KVIS	m2/s	Stoke
Length	DIST	mm	m in ft cm km mile yard micron thou angstrom
LinearDensity	PDIS	mm-1
Luminance	LUMNCE	cd/m2
LuminousFlux	LUMLUX	lumen
LuminousIntensity	LUMI	Candela
MagFieldIntensity	MFIN	A/m
MagFluxDensity	MFXD	tesla
MagneticFlux	MGFX	weber
Mass	MASS	kg	gram tonne lb oz longTon shortTon cwt longCwt shortCwt ozt grain stone
MassFlow	MFLO	kg/s
MassFlux	MASLUX	kg/s/m2
MassPerArea	MAPEA	kg/m2
MassPerEnergy	MAPGY	kg/J
MassReactionRate	MARETE	kg/s/m3
MolarConcentration	MOLONC	Mol/m3
MolarEntropy	MOLOPY	J/Mol/K
MolarFlow	MOLLOW	Mol/s
MolarMass	MOLASS	kg/Mol
MolarPermeability	MOLITY
MolarReactionRate	MOLATV	Mol/m3/s
MolarReactionRateMass	MOLATM	Mol/kg/s
MolarVolume	MOLUME	m3/Mol
MoleFluxDensity	MOLATA	Mol/m2/s
MolePerMass	MOLALY	Mol/kg
Momentum	MOME	N.s
Noise	NOIS	DecibelA
Permeability	PMBT	H/m
Permittivity	PMTT	F/m
pH	PH	pH
Power	POWE	kW	hp watt
PowerPerArea	POPEA	W/m2
PowerPerVolume	POWUME	W/m3
Pressure	PRES	pascal	bar atm psi torr mmHg inHg osi inHgAtSixtyDegF mmHgAtSixtyDegF inWaterAtSixtyDegF inWaterAtFourDegC ftWaterAtSixtyDegF ftWaterAtFourDegC mmWaterAtSixtyDegF mmWaterAtFourDegC at
PressurePerDistance	PRPEST	Pa/m
PressurePerTemperature	PRPEMP	Pa/K
PressureRate	PREATE	Pa/s
Radiance	RADNCE
RadiantIntensity	RADITY	W/sr
RadiationDose	RDOS	sievert	rem gray raddose
Radioactivity	RADY	Bq	curie
RadioactivityConc	RADONC	Bq/m3
Ratio	RATIO	Ratio	pc ppm ppb
ReactivePower	REAC	VAreac
Resistivity	REST	ohm/m
RotationalStiffness	STFR	N.m/rad
SecondMomentOfArea	SMOFA	metre4
SolidAngle	SANGL	steradian
SolventPermeability	SOPETY	kg/m2/s/Pa
SpecFuelelConsumptionVol	SPFUNS	m3/J
SpecHeatCapacity	SHCP	J/kg/K
SpecificRadioactivity	SPVITY	Bq/g
SpecificSurfaceMass	SPEASS	m2/kg
Speed	SPEE	m/s	knot
Stiffness	STIF	N/m
SubstanceQuantity	SUBQ	Mole	lbMole stdcubicfoot stdcubicmeters
SurfaceDensity	PSQD	mm-2
Temperature	TEMP	degC	degF kelvin degRan
TemperatureGradient	TPDI	degC/mm
TemperatureRate	TEMATE	K/s
TemperatureVolumePerMole	VOLPTQ
ThermalConductivity	TCON	W/m/K
ThermalExpansionCoeff	THENCO	degC-1
ThermalResistance	TRES	K/W
Time	TIME	second	min hr day month week year
Torque	TORQ	N.m
UnitMass	UMAS	kg/mm
ViscosityDynamic	VISC	Pa.s	poise
VolHeatTransferCoeff	VOLEFF	W/m3/K
Volume	CUDI	mm3	litre ImpGal USGal bbl Mbbl MMbbl grt ImpQrt USQrt USDryQrt ImpPint USPint USDryPint ImpFloz USFloz USDryGal
VolumetricFlow	VFLO	m3/s	MSCubicFeetDay
None	NONE			numerical real attribute
WORD	WORD			used in assigning parameter dimensions etc.
Parameter	UNIPAR			used for parameter attributes