Programming in Prolog (2nd ed.)
Programming in Prolog (2nd ed.)
Magic sets and other strange ways to implement logic programs (extended abstract)
PODS '86 Proceedings of the fifth ACM SIGACT-SIGMOD symposium on Principles of database systems
Data independent recursion in deductive databases
PODS '86 Proceedings of the fifth ACM SIGACT-SIGMOD symposium on Principles of database systems
Filtering data flow in deductive databases
Proceedings on International conference on database theory
An amateur's introduction to recursive query processing strategies
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
Bounds on the propagation of selection into logic programs
PODS '87 Proceedings of the sixth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
PODS '87 Proceedings of the sixth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
A study of transitive closure as a recursion mechanism
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
Implementation of logiclal query languages for databases (abstract only)
SIGMOD '85 Proceedings of the 1985 ACM SIGMOD international conference on Management of data
Logic and Databases: A Deductive Approach
ACM Computing Surveys (CSUR)
Principles of Database Systems
Principles of Database Systems
Universality of data retrieval languages
POPL '79 Proceedings of the 6th ACM SIGACT-SIGPLAN symposium on Principles of programming languages
Horn clauses and the fixpoint query hierarchy
PODS '82 Proceedings of the 1st ACM SIGACT-SIGMOD symposium on Principles of database systems
Alpha: An Extension of Relational Algebra to Express a Class of Recursive Queries
Proceedings of the Third International Conference on Data Engineering
Theory of Relational Databases
Theory of Relational Databases
Towards an algebraic theory of recursion
Journal of the ACM (JACM)
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Efficient least-fixpoint query evaluation is crucial to using logic as the query language for relational databases. The authors present a selection transposition algorithm that allows selections that are conjunctions of the predicates of the form column theta value to be evaluated ahead of the least-fixpoint operator while processing linear recursive queries. It is also shown that the algorithm transposes the strongest possible selection.