2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/31966The problem of answering queries posed to a peer who is a member of a peer-to-peer data exchange system is studied. The answers have to be consistent wrt to both the local semantic constraints and the data exchange constraints with other peers; and must also respect certain trust relationships between peers. A semantics for peer consistent answers under exchange constraints and trust relationships is introduced and some techniques for obtaining those answers are presented.14 pagesDatabasesLogic in Computer ScienceH.2.4;F.4.1;I.2.3text