Distributed Databases
Storing a separate copy of the database at multiple locations is which of the following?

Data Replication
Vertical Partitioning
Horizontal Partitioning
Horizontal and Vertical Partitioning

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

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Distributed Databases
A heterogeneous distributed database is which of the following?

A different DBMS is used at each location and data are distributed across all nodes.
The same DBMS is used at each location and data are not distributed across all nodes.
A different DBMS is used at each location and data are not distributed across all nodes.
The same DBMS is used at each location and data are distributed across all nodes.

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Distributed Databases
A distributed database is which of the following?

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

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