Fixpoint semantics for active integrity constraints

Fixpoint semantics for active integrity constraints

Active integrity constraints (AICs) constitute a formalism to associate with a database not just the constraints it should adhere to, but also how to fix the database in case one or more of these constraints are violated. The intuitions regarding which repairs are “good” given such a description are closely related to intuitions that live in various areas of non-monotonic reasoning, such as log...

Semantics for Active Integrity Constraints Using Approximation Fixpoint Theory

Active integrity constraints (AICs) constitute a formalism to associate with a database not just the constraints it should adhere to, but also how to fix the database in case one or more of these constraints are violated. The intuitions regarding which repairs are “good” given such a description are closely related to intuitions that live in various areas of non-monotonic reasoning. In this pap...

Declarative Semantics for Active Integrity Constraints

We study active integrity constraints, a formalism designed to describe integrity constraints on databases and to specify preferred ways to enforce them. The original semantics proposed for active integrity constraints is based on the concept of a founded repair. We point out that groundedness underlying founded repairs does not prevent cyclic justifications and so, may be inappropriate in some...

Integrity Constraints : Semantics and

Integrity Constraints: Semantics and Applications