In this paper we deal with the logical and physical optimization of select-from-where queries over interval probabilistic data. We present a data model with algebraic equivalences, to be used to verify the equivalence of alternative query plans, and propose and compare different join algorithms over uncertain relations. We also provide a preliminary experimental evaluation of our contributions.
Optimization of Queries over Interval Probabilistic Data / M. Magnani; D. Montesi. - STAMPA. - 5291:(2008), pp. 298-311. (Intervento presentato al convegno Scalable Uncertainty Management, Second International Conference tenutosi a Naples (Italy) nel Ottobre 2008).
Optimization of Queries over Interval Probabilistic Data
MAGNANI, MATTEO;MONTESI, DANILO
2008
Abstract
In this paper we deal with the logical and physical optimization of select-from-where queries over interval probabilistic data. We present a data model with algebraic equivalences, to be used to verify the equivalence of alternative query plans, and propose and compare different join algorithms over uncertain relations. We also provide a preliminary experimental evaluation of our contributions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
