Relational fault tolerant interface to heterogeneous distributed databases

The problem of heterogeneous distributed databases is discussed, and a uniform logical interface to the end user from a collection of different environments is proposed. The logical interface will allow a relational view to any database model in a distributed system. The general structure of the basic elements of the model supporting the proposed interface are given. Fault-tolerance aspects of the system are discussed, and error-detection techniques and recovery protocols are described.<
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