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

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

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Distributed Databases
Which of the following is true concerning a global transaction?

The required data are located in at least one nonlocal site and the distributed DBMS passes the request to only the local DBMS.
The required data are at one local site and the distributed DBMS passes the request to only the local DBMS.
The required data are at one local site and the distributed DBMS routes requests as necessary.
The required data are located in at least one nonlocal site and the distributed DBMS routes requests as necessary.

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