Distributed Databases
Which of the following is not one of the stages in the evolution of distributed DBMS?

Unit of work
Distributed request
Remote unit of work
Distributed unit of Work

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Distributed Databases
A distributed database is which of the following?

A single logical database that is limited to one location.
A single logical database that is spread to multiple locations and is interconnected by a network
A loose collection of file that is limited to one location.
A loose collection of file that is spread to multiple locations and is interconnected by a network

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