Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dependency theory is a subfield of database theory which studies implication and optimization problems related to logical constraints, commonly called dependencies, on databases. The best known class of such dependencies are functional dependencies, which form the foundation of keys on database relations. Another important class of dependencies are the multivalued dependencies. A key algorithm in dependency theory is the Chase, and much of the theory is devoted to its study.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.