Optimization Project home page.

ODB Tools

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Effects on query processing

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• Boolean factor introduction: Index Introduction

• Boolean factor removal: Implicit Join Elimination

• Specialization of a role filler class: Modification of an Implicit Join

• Contradiction: Avoid Useless Data Access

• Specialization of the target class: Reduce Data Access

• Individuation of classes subsumed by the query: Subset of the oids-list without predicate evaluation