Distributed Database
A distributed database (DDB) is a collection of multiple,logically interrelated databases distributed over a computer network. A distributed database management system (D–DBMS) is the software that manages the DDB and provides an access mechanism that makes this distribution transparent to the users.
Distributed database system (DDBS) = DDB + D–DBMS
What is not a DDBS?
A timesharing computer system
A loosely or tightly coupled multiprocessor
system
A database system which resides at one of the
nodes of a network of computers - this is a
centralized database on a network node
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