VDB meaning in Database Management ?

Answer:

What is Virtual Database mean?

A federated database system is a type of meta-database management system (DBMS), which transparently maps multiple autonomous database systems into a single federated database. The constituent databases are interconnected via a computer network and may be geographically decentralized. Since the constituent database systems remain autonomous, a federated database system is a contrastable alternative to the (sometimes daunting) task of merging several disparate databases. A federated database, or virtual database, is a composite of all constituent databases in a federated database system. There is no actual data integration in the constituent disparate databases as a result of data federation.

Through data abstraction, federated database systems can provide a uniform user interface, enabling users and clients to store and retrieve data from multiple noncontiguous databases with a single query—even if the constituent databases are heterogeneous. To this end, a federated database system must be able to decompose the query into subqueries for submission to the relevant constituent DBMSs, after which the system must composite the result sets of the subqueries. Because various database management systems employ different query languages, federated database systems can apply wrappers to the subqueries to translate them into the appropriate query languages.

reference

Full Form	Category
Variable Declining Balance	Accounts and Finance
Fagernes	Airport Code
Vandyke Brown Test	Chemistry
Video Data Bank	Community
Volunteers de Don Bosco	Community
Victor David Brenner	Community
Virus Data Base	Computing
Vlc Decoding Buffer	Computing
Video Display Buffer	Computing
Video Display Board	Computing
Valle Del Bove	Country Specific
Virtual Database	Database Management
van Den Bergh	General
Vested Dual Benefit	General
Victor D Brenner	General
Virtual Diamond Boutique	General
Volunteers of Don Bosco	General
Vintage Daily Beater	General
Ventilated Disc Brake	General
Volvo Do Brasil	General
Vehicle Distribution Box	General
Vehicle Data Base	General
Valvoline Dura Blend	General
Van Den Brink	General
Variations, Daywork Basis	General
Voluntary Denied Boarding	Governmental
Virology Devices Branch	Governmental
Van Der Bauwede	International
Van Der	International
Vereinigung Deutsche Backtechnik	International
Vulnerability Database	Military and Defence
Fagernes, Norway	Regional
Visual Dbase	Softwares
Verification Database	Space Science
Ventnor Directory of Bodybuilding	Sports
Visitors Display Board	Sports