Query Rewriting and Optimization for Ontological Databases
Ontological queries are evaluated against a knowledge base consisting of an extensional database and an ontology (i.e., a set of logical assertions and constraints which derive new intensional knowledge from the extensional database), rather than directly on the extensional database. The evaluation...
| Автори: | , , |
|---|---|
| Формат: | Journal article |
| Опубліковано: |
2014
|