W3C Data Cube spec uses SPARQL too

To those who are critical of using SPARQL as a way of expressing 
constraints, or as a way of writing specifications, please take a look at

     http://www.w3.org/TR/vocab-data-cube/#wf-rules

The Data Cube Vocabulary is a W3C Recommendation that defines its 
constraints in SPARQL. This is instantly executable.

HTH
Holger