A vision to construct multiple data views in peer data management systems
Rozlina Binti Mohamed, Mohamed Basel Almourad, Yaser M. A. Khalifa · 2006
Peer data management systems (PDMS) has made available to almost all computer users to have a basic physical capability ofsharing data. Meanwhile, problem of data sharing from multiple locations has raised significant attention since the actual data is stored in users ' data sources at peers ' location [KP05]. Usually, a logical virtual mediated schema is used to create data views that describe contents of the data sources. View is a stored query, which is formulated over data sources schemas in order to get access to the actual data sources. Thus, any user query is formulated over this view. There are several well-known approaches to create view for data integration, i.e Global-As-View (GAV), Local-As-View (LAV), Global-Local-As-View (GLAV) and Both-As-View (BAV) [MP03] [MH03]. These approaches are originally developed for federated database management systems (FDBMS) or mediated systems, it require for extension in order to apply in p2p environment. Meanwhile, Local Relational Model (LRM) [BGK+02] is a data model specifically design for p2p application. LRM directly combined related peers to each other via domain relation. However, it is limited to relational databases shared among peers. On the other hand, LRM is proposed on pure p2p network. In contrast, this research intended