A distributed database management (DDBMS) system
is defined as the software system that permits the management of distributed
database and makes the distribution transparent to the user.
A distributed database management system
is the software that manage the distribute database and provide an access
mechanism that makes this distribution transparent to the user.
A distributes database system is not only
the collection of files that can individually stored at the different nodes of
network.
To form a
DDBMS file should not be logically related but there should be a structure
among the files and access should be via common interface.
Promises of distributed database
management system
- Transparent management of distributes, fragmented and replicates data
- Network transparency
- Improve reliability and availability through distributed transactions
- Improve performance
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