Kuliberda, KamilWiślicki, JacekKowalski, Tomasz MarekAdamus, RadosławKaczmarek, KrzysztofSubieta, Kazimierz2015-06-032015-06-032010Journal of Applied Computer Science., 2010 Vol.18 nr 2 s.25-55 sum.1507-03600000028529http://hdl.handle.net/11652/450The article describes the problem of integration of distributed, heterogeneous and fragmented collections of data with application of the virtual repository and the data grid concept. The technology involves: wrappers enveloping external resources, a virtual network (based on the peer-topeer technology) responsible for integration of data into one global schema and a distributed index for speeding-up data retrieval. Authors present a method for obtaining data from heterogeneously structured external databases and then a procedure of integration the data to one, commonly available, global schema. The core of the described solution is based on the Stack-Based Query Language (SBQL) and virtual updatable SBQL views. The system transport and indexing layer is based on the P2P architecture.application/pdfenArtykuł