Distributed databases principles and systems
Distributed databases principles and systems
An introduction to database systems: vol. I (4th ed.)
An introduction to database systems: vol. I (4th ed.)
A state transition model for distributed query processing
ACM Transactions on Database Systems (TODS)
Query processing in a system for distributed databases (SDD-1)
ACM Transactions on Database Systems (TODS)
Introduction to a system for distributed databases (SDD-1)
ACM Transactions on Database Systems (TODS)
Using Semi-Joins to Solve Relational Queries
Journal of the ACM (JACM)
A relational model of data for large shared data banks
Communications of the ACM
Principles of Database Systems
Principles of Database Systems
A methodology for interpreting tree queries into optimal semi-join expressions
SIGMOD '80 Proceedings of the 1980 ACM SIGMOD international conference on Management of data
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The problems inherent in managing a database distributed over a very large number of sites are considered. The applications of such databases to the provision of telecommunications and other public services are discussed. It is shown that the distribution and maintenance of the directory information describing object locations poses some fundamental problems. A new partially informed class of distributed databases is described which distributes the directory information on a “needs-to-know” basis. The class is described by models of the network topology, and by the knowledge available to each site. These proposals are sufficiently general to support the partitioning of data relations into distribution fragments, and for those fragments to be replicated at multiple sites.