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.

legacy system

(jargon)A computer system or application program whichcontinues to be used because of the cost of replacing orredesigning it and often despite its poor competitiveness andcompatibility with modern equivalents. The implication isthat the system is large, monolithic and difficult to modify.

If legacy software only runs on antiquated hardware the costof maintaining this may eventually outweigh the cost ofreplacing both the software and hardware unless some form ofemulation or backward compatibility allows the software torun on new hardware.

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

An obsolete computer system centred around a mainframe platform which is not worth the cost of upgrading or salvaging. As enterprise modernises hardware, IT departments may be forced to integrate legacy system data, which can be logistically difficult, since obsolete software was often custom written by people who left the institution.

legacy system

(leg′ă-sē) [L. legatia, office of deputy] An old, slow, or out-of date computer system.

单词	legacy system
释义	legacy system legacy system An outmoded computer system that is still in use. legacy system 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. legacy system (jargon)A computer system or application program whichcontinues to be used because of the cost of replacing orredesigning it and often despite its poor competitiveness andcompatibility with modern equivalents. The implication isthat the system is large, monolithic and difficult to modify. If legacy software only runs on antiquated hardware the costof maintaining this may eventually outweigh the cost ofreplacing both the software and hardware unless some form ofemulation or backward compatibility allows the software torun on new hardware. 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 legacy system An obsolete computer system centred around a mainframe platform which is not worth the cost of upgrading or salvaging. As enterprise modernises hardware, IT departments may be forced to integrate legacy system data, which can be logistically difficult, since obsolete software was often custom written by people who left the institution. legacy system (leg′ă-sē) [L. legatia, office of deputy] An old, slow, or out-of date computer system. LegalSeelegacy
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