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Safe Stratified Datalog With Integer Order Programs, Peter Revesz
Safe Stratified Datalog With Integer Order Programs, Peter Revesz
CSE Conference and Workshop Papers
Guaranteeing termination of programs on all valid inputs is important for database applications. Termination cannot be guaranteed in Stratified Datalog with integer (gap)-order programs on generalized databases because they express any Turing-computable function. This paper introduces a restriction of those programs that can express only computable queries. The restricted language has a high expressive power and a non-elementary data complexity.