'Logical query languages' diaporamas de présentation

A Brief History of DB Theory

A Brief History of DB Theory. Functional dependencies --- Normalization More dependencies: multivalued, general Universal relations Acyclic hypergraphs Logical query languages: Datalog. Functional Dependencies.

570 views • 47 slides

Logical Query Languages

Logical Query Languages. Motivation: Logical rules extend more naturally to recursive queries than does relational algebra. Used in SQL recursion. Logical rules form the basis for many information-integration systems and applications. Datalog Example. Likes( drinker , beer )

494 views • 29 slides

Spring 2011 Instructor: Hassan Khosravi

368 views • 23 slides

The History of Datalog

370 views • 23 slides