system life cycle


Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms.
Related to system life cycle: System Development Life Cycle

system life cycle

[′sis·təm ′līf ‚sī·kəl]
(engineering)
The continuum of phases through which a system passes from conception through disposition.

system life cycle

The phases in the life of an information system, which includes its initiation, development, maintenance and eventual demise. The length of the cycle depends on the nature and volatility of the business, as well as the software development tools used to generate the applications and databases. An information system that is revised over and over throughout the course of many business changes often becomes structurally weak. Programming changes become difficult to apply to applications that have been patched dozens of times. At some point, it is practical to start over from scratch. See application lifecycle management and ISO/IEC 12207.
Mentioned in ?
References in periodicals archive ?
Evidently, the best analysis of the global recession--an economic slowdown, and its impact on business systems can be recognized through analysis of a business system life cycle. Since a life cycle is observed through relations between money flows and time, and it comprises all relevant elements of organizational behavior, this gives us an opportunity to analyze thoroughly a recession impact on a business system.
Life-cycle oriented environmental management is based on the supposition that organizations affect the natural environment throughout their product's or service's entire physical system life cycle. This includes its aftereffects, not just what occurs during production or service processes.
Course emphasis Topic Degree of Emphasis(*) Structured analysis and design 1.17 System life cycle 1.25 Systems approach 1.28 Documentation tools 1.40 Human factors considerations 1.45 Prototyping 1.53 Systems theory 1.62 Interviewing techniques 1.70 Cost-benefit analysis 1.71 Oral presentations 1.73 Screen design 1.74 Source document design 1.82 Database design 1.82 Printed report design 1.86 Software selection 1.88 Written proposals 1.89 System security and control 1.91 User manual 2.03 Hardware selection 2.10 Questionnaire design 2.14 Career opportunities 2.25 Statistical sampling and analysis 2.40 * Value code (1 = Much emphasis; 2 = Some emphasis; 3 = Little emphasis) Today, there are several popular methodologies in addition to the SLC.
The term systems analysis is a better description of the activities performed during the first phases of the system life cycle. Systems analysis should determine all three major questions relevant to the developed software system: why it should be developed (identifying the problems and the needs being addressed), what it should accomplish (specifying requirements), and how it should be constructed (outlining a conceptual design).
The ALIS will be used by NATO to support the management of operations and maintenance services at the Main Operating Base (MOB) in Sigonella (Syracuse Italy), in deployed locations and by NATO logistic support management organisations during the AGS Core System life cycle.
Accumulating budget pressures and ongoing DoD leadership attention has accelerated the need to reduce weapons system life cycle costs and maximize efficiencies across the entire Department.
The reliability assessment results could be used to improve the reliability assessment processes, and are a source of information for improvement of the system throughout the system life cycle.
However, measured over the weapon system life cycle, logistics cost (i.e.
At present, system provisioning and the system life cycle are mainly automated on the process side.
Weapon System Life Cycle Cost Categories and Phases Life Cycle Cost Categories Notional % of Total Costs Dev 25% Prod 25% O&S 40% Disp 5% Note: Table made from bar graph [FIGURE 1 OMITTED]
Build a robust centralized solution providing complete process information system life cycle from requirements management, through the development and testing of software, through the automation of build and deploy until after the end of the support system.
Note, too, the last sentence: "Supportability, a key component of performance, shall be considered throughout the system life cycle." Not just a one-time thing.

Full browser ?