Virtual database
(also VDB)
Virtual database definition
A virtual database is a management system that allows users to query data from multiple sources as if they were part of a single, unified database. By providing a consistent view of data from different formats, virtual databases obviate the need for the user to learn how to manipulate their underlying data structures and hunt for information separately.
See also: database administration, database management system, database report, data center virtualization
How a virtual database works
A virtual database creates an abstraction layer on top of one or more data sources (such as SQL databases, NoSQL databases, or external APIs), using a technique known as “data virtualization” to create a logical data model that maps to their data structures. The resulting superstructure allows users to query data from different subsystems using a common set of data definitions and commands.
Common virtual database uses
- Businesses frequently use virtual databases to get a unified view of the data for business analysis and reporting.
- Virtual databases are used by IT professionals to help with data migration — for example, by connecting source and target databases.
- Virtual databases allow management and IT applications to access data from various sources seamlessly.