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...
| Main Authors: | , , |
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| 格式: | Journal article |
| 出版: |
2014
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