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SPARQL for Business Intelligence

SPARQL for Business Intelligence. Orri Erling - Program Manager, Virtuoso. © 2008 OpenLink Software, All rights reserved. 1. For The Data Web to Deliver. Promise of limitless integration and analysis Existing SQL workloads should naturally fall within SPARQL’s scope

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SPARQL for Business Intelligence

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  1. SPARQL for Business Intelligence • Orri Erling - Program Manager, Virtuoso © 2008 OpenLink Software, All rights reserved. 1

  2. For The Data Web to Deliver • Promise of limitless integration and analysis • Existing SQL workloads should naturally fall within SPARQL’s scope • Surfing and joining between relational data and RDF should be seamless © 2008 OpenLink Software, All rights reserved. 2

  3. What Is Missing? • Aggregation • Nested Queries • Expressions © 2008 OpenLink Software, All rights reserved. 3

  4. Mapped vs. Physical RDF • Predicates are unspecified • Combining lots off different data sources • Lots of A-box inference (SameAs, Transitivity) • Mapped is better, if: Physical is better, if: • Can push all to RDBMS - about 10x faster • Data is time-sensitive, frequently changing, very large © 2008 OpenLink Software, All rights reserved.

  5. When defining mappings... • Be careful when many tables make one entity - you may get lots of unions • Make explicit IRI scheme to limit pointless joining • Know what the mapper and SQL can and cannot optimize © 2008 OpenLink Software, All rights reserved. 5

  6. Some Present Work • Refining generated SQL • There is no reason why SPARQL mapped should not equal SQL in performance, when going to single DBMS © 2008 OpenLink Software, All rights reserved.

  7. Joining Between Mapped and Physical • Special SQL logic is needed when joining IRI IDs of physical quads with IRI strings of virtual triples • SameAs requires special attention © 2008 OpenLink Software, All rights reserved. 7

  8. Use Cases • OpenLink MIS • All accounts, CRM, products, emails, support cases have URIs • MusicBrainz • OpenLink Data Spaces • PHPbb, Mediawiki, Drupal, etc. © 2008 OpenLink Software, All rights reserved. 8

  9. OpenLink Software Thank You! http://virtuoso.openlinksw.com © 2008 OpenLink Software, All rights reserved.

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