Reference Architecture of DDBMS
Reference Architecture of DDBMS Centralized Database System: A type of database system in which all system components reside at a single computer or site is known as a Centralized database system. The system components include database and DBMS etc. Distributed Database System: A type of database system in which the database is stored physically across computers or sites at different locations is known as a distributed database system. The sites of a distributed database may be spread over a large area connected via a wide area network (WAN) or over a small area such as a building or a campus connected via a local area network. Decentralized Database: A type of database system in which the database is stored on computers or sites at different locations is known as a decentralized database system. In a computer decentralized database, the computer system is not interconnected via a network. So the users at various sites cannot share data of any type. It is a collection of in...