Media type: E-Article Title: Practical Aspects of Declarative Languages: Optimizing Inequality Joins in Datalog with Approximated Constraint Propagation Contributor: Campagna, Dario; Sarna-Starosta, Beata; Schrijvers, Tom imprint: Springer Berlin Heidelberg, 2012 Published in: Practical Aspects of Declarative Languages Language: Not determined DOI: 10.1007/978-3-642-27694-1_9 ISSN: 0302-9743; 1611-3349 Origination: Footnote: