We propose a conceptual integration of deductive program verification into existing user interfaces for software debugging. This is well-represented in the "Debug Adapter Protocol", widely-used and generic technology to integrate debugging programs development environments. Commands like step-forward step-in are backed by steps symbolic structural operational semantics, different paths through ...

In this paper we present a refutation procedure to compute goals in a deductive database according to particular views of it. Views are deened by a set of constraints rules. The declarative semantics of the constrained database is deened and the given refutation procedure is proved correct and complete for positive range{restricted databases. The extension of the procedure to deal with negation...

Equivalences and translations between consequence relations abound in logic. The notion of equivalence can be defined syntactically, in terms of translations of formulas, and order-theoretically, in terms of the associated lattices of theories. W. Blok and D. Pigozzi proved in [2] that the two definitions coincide in the case of an algebraizable sentential deductive system. A refined treatment ...

Although there are a number of issues to resolve, active databases, object-oriented databases, and deductive databases can be smoothly integrated. We present the integration challenges, provide a resolution to the issues, and show a way to achieve this integration by describing the active, object-oriented, and deductive features of a model/language called Harmony. Harmony lets us see the integr...