Data Warehouses and the Semantic Web - Data Warehouse Systems: Design and Implementation - page 552

@prefix sdmx-dimension: < http://purl.org/linked-data/sdmx/2009/dimension# > .
@prefix skos: < http://www.w3.org/2004/02/skos/core# > .
@prefix db: < http://dbpedia.org/resource/ > .
Dimensions are defined using the property qb:DimensionProperty as follows:
nw:Employee a rdf:Property, qb:DimensionProperty ; rdfs:label '' Employee '' @en .
nw:OrderDate a rdf:Property, qb:DimensionProperty ; rdfs:label '' Order Date '' @en ;
rdfs:subPropertyOf sdmx-dimension:refPeriod ;
qb:concept sdmx-concept:refPeriod .
nw:DueDate a rdf:Property, qb:DimensionProperty ; rdfs:label '' Due Date '' @en ;
rdfs:subPropertyOf sdmx-dimension:refPeriod ;
qb:concept sdmx-concept:refPeriod .
nw:ShippedDate a rdf:Property, qb:DimensionProperty ;
rdfs:label '' Shipped Date '' @en ; rdfs:subPropertyOf sdmx-dimension:refPeriod ;
qb:concept sdmx-concept:refPeriod .
nw:Product a rdf:Property, qb:DimensionProperty ; rdfs:label '' Product '' @en .
nw:Order a rdf:Property, qb:DimensionProperty ; rdfs:label '' Order '' @en .
nw:Shipper a rdf:Property, qb:DimensionProperty ; rdfs:label '' Shipper '' @en .
nw:Customer a rdf:Property, qb:DimensionProperty ; rdfs:label '' Customer '' @en .
nw:Supplier a rdf:Property, qb:DimensionProperty ; rdfs:label '' Suppliers '' @en .
A cube is defined using the property qb:DataStructureDefinition , and its
dimensions are defined using the property qb4o:level , as follows:
nw:Northwind a qb:DataStructureDefinition ;
qb:component [qb4o:level nw:Employee] ;
qb:component [qb4o:level nw:OrderDate] ;
qb:component [qb4o:level nw:DueDate] ;
qb:component [qb4o:level nw:ShippedDate] ;
qb:component [qb4o:level nw:Product] ;
qb:component [qb4o:level nw:Order] ;
qb:component [qb4o:level nw:Shipper] ;
qb:component [qb4o:level nw:Supplier] ;
qb:component [qb4o:level nw:Customer] ;
Measures are defined using the property qb:measure , where the aggre-
gate function associated with each measure is defined using the property
qb4o:hasAggregateFunction :
qb:component [qb:measure nw:Quantity ;
qb4o:hasAggregateFunction qb4o:sum] ;
qb:component [qb:measure nw:UnitPrice ;
qb4o:hasAggregateFunction qb4o:avg] ;
qb:component [qb:measure nw:Discount ;
qb4o:hasAggregateFunction qb4o:avg] ;
qb:component [qb:measure nw:SalesAmount ;
qb4o:hasAggregateFunction qb4o:sum] ;
qb:component [qb:measure nw:Freight ;
qb4o:hasAggregateFunction qb4o:sum] ;
qb:component [qb:measure nw:NetAmount ;
qb4o:hasAggregateFunction qb4o:sum] .