Using Schema to Filter Resource Descriptions

• Find the Painting resources that have been exhibited as well as the related target resources of type ExtResource (i.e., restrict multiply classified property target values using node labels)

select X, Y from {X:Painting}exhibited{Y}.ExtResource

Note the difference with the following path exression

select X, Y from {X:Painting}exhibited{Y:ExtResource}

• Find modified resources which can be reached by a property applied to the class Painting and its subclasses (i.e., restrict property source values using edge labels)

select @P, Y, Z

from {:$X}@P.{Y}last_modified{Z}

where $X <=Painting

Diapositive prÈcÈdente

Diapositive suivante

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