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legacy system
(redirected from Legacy systems)

    Also found in: Wikipedia 0.01 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.
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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
Three years ago, the Illinois-based broker, direct marketer and third-party administrator recognized that one of its legacy systems wouldn't let it tap a growing online marketplace for professional liability coverage.
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
 
 
 
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