A distributed database management system ('DDBMS') is a software system that permits the management of a distributed database and makes the distribution transparent to the users. A distributed database is a collection of multiple, logically interrelated databases distributed over a computer network. Sometimes "distributed database system" is used to refer jointly to the distributed database and the distributed DBMS. A distributed database system consists of loosely coupled sites that share no physical component.Database systems that run on each site are independent of each other.
Read more about Distributed Database Management System: Overview, Characteristics, Functionality, Homogeneous DDBMS, Heterogeneous DDBMS
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