Logicflow execution model for parallel databases

The LOGFLOW parallel Prolog system is similar to the recent parallel databa se systems concerning its dataflow execution model and its capability of ru nning on shared-nothing architectures. In this paper the abstract execution and abstract machine models of LOGFLOW are examined from a database point of view. Transformations of relational operators into the Logicflow Graph r epresentation of Prolog programs an explained. Thus, LOGFLOW can operate as a relational database machine. (C) 2000 Published by Elsevier Science B.V. All rights reserved.