Database machine

A database machines or back end processor is a computer or special hardware that stores and retrieves data from a database. It is specially designed for database access and is tightly coupled to the main (front-end) computer(s) by a high-speed channel,^[1] whereas a database server is a general-purpose computer that holds a database and it's loosely coupled via a local area network to its clients.

Database machines can retrieve large amount of data using hundreds to thousands of microprocessors with database software. The front end processor asks the back end (typically sending a query expressed in a query language) the data and further processes it. The back end processor on the other hand analyzes and stores the data from the front end processor. Back end processors result in higher performance, increasing host main memory, increasing database recovery and security, and decreasing cost to manufacture.

History

Britton-Lee (IDM), Tandem (Non-Stop System), and Teradata (DBC) all offered early commercial specialized database machines.^[2] A more recent example was Oracle Exadata.

References

↑ This article is based on material taken from Database+machine at the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.
↑ Ricardo, Catherine M. (2002). "Database Machines". Encyclopedia of Information Systems. Academic Press. pp. 403–410. doi:10.1016/B0-12-227240-4/00027-7. ISBN 978-0-12-227240-0.

Berra, P. Bruce. “Data base machines.” SIGIR Forum 12, 3 (Winter 1977), 4–23. https://doi.org/10.1145/1095317.1095318
Banerjee, Jayanta. “Data structuring and indexing for data base machines.” In Proceedings of the fifth workshop on Computer architecture for non-numeric processing (CAW '80). Association for Computing Machinery, New York, NY, USA, 11–16. https://doi.org/10.1145/800083.802687
Song, Siang Wun. “A Survey and Taxonomy of Database Machines.” IEEE Database Eng. Bull. 4 (1981): 3-13.
Hoffer, Jeffrey A.; Alexander, Mary B. “The diffusion of database machines.” SIGMIS Database 23, 2 (Spring 1992): 13–19. https://doi.org/10.1145/141342.141352

[foldoc-1] This article is based on material taken from Database+machine at the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.

[2] Ricardo, Catherine M. (2002). "Database Machines". Encyclopedia of Information Systems. Academic Press. pp. 403–410. doi:10.1016/B0-12-227240-4/00027-7. ISBN 978-0-12-227240-0.

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v t e Database
Main	Requirements Theory Database object Models Database management system Machine Engine Server Application Connection datasource DSN Administrator Synonym Lock Types Tools
Languages	Data definition Data manipulation Query information retrieval
Security	Activity monitoring Audit Forensics Negative database
Design	Entities and relationships (and Enhanced notation) Normalization Schema Refactoring Cardinality
Programming	Abstraction layer Object–relational mapping
Management	Virtualization Tuning caching Migration Preservation Integrity
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See also	Database-centric architecture Intelligent database Two-phase locking Locks with ordered sharing Load file Publishing Halloween Problem Log shipping
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Database machine

History

See also

References

Further reading