Conjunctive Query Answering with OWL 2 QL
Kikot, Stanislav (Birkbeck, University of London) | Kontchakov, Roman (Birkbeck, University of London) | Zakharyaschev, Michael (Birkbeck, University of London)
The key idea is that RDBMSs in practice appears to indicate only that answering data, 'stored in a standard relational database management real-world queries over real-world databases turns out to be system (RDBMS), can be queried through an OWL 2 QL tractable. As rewritings can turn a standard query to something ontology via a simple rewriting mechanism, i.e., by rewriting'out of this world,' a first rule of thumb could be as follows: the query into an SQL query that is then answered by the rewritten query should look similar to the original the RDBMS, without any changes to the data' (
