Data Quality Monitoring Reports

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(Example 1: Property Completeness Violations (OWL DL Design))
(Example 1: Property Completeness Violations (OWL DL Design))
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===Example 1: Property Completeness Violations (OWL DL Design)===
 
===Example 1: Property Completeness Violations (OWL DL Design)===
 
<syntaxhighlight lang="sparql">
 
<syntaxhighlight lang="sparql">
SELECT ?i ?dqr
+
SELECT ?dqr ?i
 
WHERE {
 
WHERE {
 
     ?dqr a dqm:PropertyCompletenessRule .
 
     ?dqr a dqm:PropertyCompletenessRule .

Revision as of 17:49, 10 October 2011

Prerequisites

With the DQM-Vocabulary you can easily create reports that show you the instances that violate your previously specified data requirements. All you need is a SPARQL-Endpoint. Before you can automatically analyze your data for requirement violations, you need to perform the following steps:

SPARQL-Problem-Reports

Each type of data requirement has different problem reports, since the nature of data requirements differs. Moreover, the actual SPARQL query you can use depends on the design option you have chosen to make your ontology elements an instance of dqm:TestedClass and dqm:TestedProperty (See [[]] for an explanation). In the following you find several SPARQL queries that make use of your data requirements to identify class instances with requirement violations.

Example 1: Property Completeness Violations (OWL DL Design)

SELECT ?dqr ?i
WHERE {
    ?dqr a dqm:PropertyCompletenessRule .
    ?dqr dqm:testedClass ?tclass .
    ?dqr dqm:testedProperty1 ?tprop .
    ?dqr dqm:requiredValue "true"^^xsd:boolean .
    ?dqr dqm:requiredProperty "true"^^xsd:boolean .
    ?tclass dqm:hasURI ?tclassreal .
    ?tprop dqm:hasURI ?tpropreal .
    BIND (IRI(str(?tpropreal)) AS ?tpropURI) .
    BIND (IRI(str(?tclassreal)) AS ?tclassURI) .
    {    
        ?i a ?tclassURI .
        NOT EXISTS{
           ?i ?tpropURI ?value .
        }
    }UNION{
        ?i a ?tclassURI .
        ?i ?tpropURI "" .
    }
}
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