Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,917,147,100 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

legacy system

   Also found in: Wikipedia 0.05 sec.
legacy system
An older computer system such as a mainframe or minicomputer. It may also refer to only the software (see legacy application).
legacy system [′leg·ə·sē ‚sis·təm]
(computer science)
A computer system that has been in operation for a long time, and whose functions are too essential to be disrupted by upgrading or integration with another system.
(jargon)legacy system - A computer system or application program which continues to be used because of the cost of replacing or redesigning it and often despite its poor competitiveness and compatibility with modern equivalents. The implication is that the system is large, monolithic and difficult to modify.

If legacy software only runs on antiquated hardware the cost of maintaining this may eventually outweigh the cost of replacing both the software and hardware unless some form of emulation or backward compatibility allows the software to run on new hardware.
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link 		Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
Delivering proactive wireless perimeter protection for legacy systems, such as handhelds and scanners equipped only with WEP or WPA/TKIP, as well as modern WPA2and EAP-based networks, helps prevent the exposure of potentially exploitable information, such as user identities and credit card information.
Wireless perimeter protection by Communications News
American National wanted to augment parts of its legacy system with a series of interfaces that tied into the back end.
Building blocks: a patchwork approach for revamping policy ... by Slavin, Al / Best's Review
Legacy system integration can be defined as reusing existing legacy systems and applications by integrating them with newly developed enterprise applications Legacy system integration provides a non-intrusive method of reusing existing mission-critical applications that reside on legacy systems such as the mainframe or AS/400 Legacy system integration can be defined as reusing existing legacy systems and applications by integrating them with newly developed enterprise applications.
Using Legacy System Integration to Reduce Risk and Costs by David Muck / Computers and Internet community
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.