Efficient and Effective Query Answering in a PDMS with SUNRISE

Peer Data Management Systems (PDMSs) have been re- cently proposed as an evolution of Peer-To-Peer (P2P) systems toward a more semantics-based description of peers’ contents and relationships. In a PDMS scenario a key challenge is query routing, i.e. the capability of selecting small subsets of semantically relevant peers to forward a query to. In this paper we demonstrate SUNRISE (System for Unified Network Routing, Indexing and Semantic Exploration), a complete infrastructure which supports an effective and efficient exploration of a PDMS network for query answering purposes. SUNRISE offers several routing policies designed around different performance priorities in order to minimize the information spanning over the network.