#### 8.9.2.15 IfcLogical

IfcLogicalIfcSimpleValue) cannot directly include simple types in its select list). Logical datatype can have values TRUE, FALSE or UNKNOWN.

Type: LOGICAL

> HISTORY New type in IFC2x.

XSD Specification:

<xs:simpleType name="IfcLogical">
<xs:restriction base="ifc:logical"/>
</xs:simpleType>
<xs:element name="IfcLogical-wrapper" nillable="true">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="ifc:IfcLogical">
<xs:attributeGroup ref="ifc:instanceAttributes"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>

EXPRESS Specification:

TYPE IfcLogical = LOGICAL;
END_TYPE;

EXPRESS-G diagram

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