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The combination of general purpose data base management systems and computer networks to produce distributed data base management systems should be the next significant step in commercial systems development. A completely generalized distributed data base management system would reside on a heterogeneous computer network with different data base systems available at various processors. Communication and data transfer would be possible between any nodes in the network. This report described the principal problem areas in distributed data base management system development. Distributed data base systems share many design problems with both single machine data base systems and computing networks, as well as introducing several new dilemmas. Recent research in these problem areas is presented to provide a picture of the state of the art of distributed data base development. In addition, the current status of the data base industry with respect to distributed processing is evaluated by reporting the current projects and future plans of selected (anonymous) data base vendors.