Processing skyline queries in incomplete distributed databases

摘要: Due to its great benefits over many database applications, skyline queries have received formidable concern in the last decades. Skyline attempt assist users by identifying set of data items which represents best results that meet conditions a given query. Most existing techniques concentrate on skylines single relation. However, distributed databases, process required accessing multiple relations might be located at different sites. Consequently, from these need joined and thus transferring one site another is unavoidable. Moreover, previous also assume values dimensions for every item are presented (complete) not always true as some may missing. In this paper, we proposed an approach processing incomplete databases. The derives where dominated removed before joining reduce time network cost. experimental illustrate our outperforms approaches terms