Documentation: Definition: The quantity data type is an abstract generalization for all data types (1) whose value set has an order relation (less-or-equal) and (2) where difference is defined in all of the data type's totally ordered value subsets. The quantity type abstraction is needed in defining certain other types, such as the interval and the probability distribution. Exhibit 110: abstract type Quantity alias QTY specializes ANY { BL lessOrEqual(QTY x); BL compares(QTY x); DataType diffType; QTY minus(QTY x); QTY plus(QTY x); BL isZero; BL lessThan(QTY x); BL greaterOrEqual(QTY x); BL greaterThan(QTY x); };

Superclasses

• DataValue

Subclasses

• IntegerNumber
• RealNumber
• PhysicalQuantity
• Ratio
• MonetaryAmount
• PointInTime

Types

• HL7_Data_Type

Template Slots
	Slot Name	Documentation	Type	Cardinality
	label	A short human readable string indicating the content of the instancehuman-readable string for the instance	String	0:1
	nullFlavor	If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.	Class	0:1

Own Slots
	Slot Name	Value
	alias	QTY
	semantic_properties	BL lessOrEqual(QTY x); BL compares(QTY x); DataType diffType; QTY minus(QTY x); QTY plus(QTY x); BL isZero; BL lessThan(QTY x); BL greaterOrEqual(QTY x); BL greaterThan(QTY x);
	:ROLE	Abstract
	:SLOT-CONSTRAINTS

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