The current research on optimizing algorithms for queries in distributed data base networks is presented. An identification of additional factors which add cost and time to processing of a query both at a node and in the transporting of data along a link in the network is given. The idea of a user topology is presented as the basis for a query optimizationâ€¦ (More)

Optimizing the time and or cost of processing a query within a distributed network involves consideration of a large number of factors that reside with a complex problem environment. The complexity of this environment has led most research in the field to simplify the problem by assuming many factors to be constant or by ignoring them. After an evaluationâ€¦ (More)