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	Legacy system - Wikipedia, the free encyclopedia
		A legacy system is an existing computer system or application program which continues to be used because the user (typically an organization) does not want to replace or redesign it.
		Legacy systems are considered to be potentially problematic by many software engineers (for example, see Bisbal et al., 1999) for several reasons.
		The system requires close to 100% availability, so it cannot be taken out of service, and the cost of designing a new system with a similar availability level are high.
	en.wikipedia.org /wiki/Legacy_system (1015 words)

	legacy system - Hutchinson encyclopedia article about legacy system (Site not responding. Last check: 2007-10-13)
		Legacy systems are a hangover from the pre-Internet business world.
		Legacy systems have to be overhauled so that a company's front- and back-room operations can integrate seamlessly with the Internet and Internet applications.
		There is considerable corporate resistance to upgrading legacy systems, which is unsurprising when some estimates believe the investment in legacy systems to be over $4 trillion worldwide.
	encyclopedia.farlex.com /Legacy+system (191 words)

	Agile Legacy Integration Modeling
		In many organizations legacy systems are poorly documented, if documented at all, leaving it up to the first team to come along to update the documentation at least to the level at which they require it.
		One system may be built to validate data in the application source code whereas another does it in the database.
		The data structures of your system and the system(s) your interfaces to will often be different, the database vendors can vary, the types of data sources (for example relational databases versus XML Files versus IMS) will vary, and worse yet the informational semantics are also likely to be different.
	www.agilemodeling.com /essays/agileLegacyIntegrationModeling.htm (2150 words)

	Using the RUP to evolve a legacy system
		We also assume that the legacy system represents a significant asset (a "legacy") that is really worth reusing in some form or another, as opposed to scrapping it altogether.
		Having to deal with a legacy system is usually considered a negative, but the existence of a "precedent" system to establish a point of comparison and use as a source of information is, in fact, very valuable.
		If the legacy system is a mission-critical system that has become extremely hard to evolve, that cannot scale up, and that relies on obsolete hardware or software technologies, then you may have to redevelop it.
	www-128.ibm.com /developerworks/rational/library/389.html (3687 words)

	Legacy - Wikipedia, the free encyclopedia
		Legacies (Babylon 5) is an episode from the first season of the science fiction television series Babylon 5.
		Star Trek: Legacy, a computer game in production by Mad Doc Software and Bethesda Softworks for the Xbox 360and for the PC, for release late-2006.
		Legacy Virus, a fictional virus from the Marvel Universe
	en.wikipedia.org /wiki/Legacy (201 words)

	Keeping the lights on: Legacy systems and the maturing workforce
		A system that is in general but not critical use and is also inadequate for the task may be a good candidate for replacement.
		The system had a client interface that was essential to business operations but needed to be replaced with a Web application that would permit clients better access to research and track their holdings.
		An organization that does not recognize the unique value of these individuals for new system development as well as legacy system maintenance may find that it has wasted a few million dollars on a new system that is not as effective as the old one.
	www-128.ibm.com /developerworks/rational/library/sep05/lieberman?ca=dgr-lnxw01legacysystems (5149 words)

	Legacy system Info - Encyclopedia WikiWhat.com (Site not responding. Last check: 2007-10-13)
		A Legacy System (or historic system) is 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, difficult and expensive 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.
	www.wikiwhat.com /encyclopedia/l/le/legacy_system.html (251 words)

	Associative Database Management Systems (ADBMS): Legacy System Transformation (Site not responding. Last check: 2007-10-13)
		The conventional wisdom for transforming legacy systems is to use relational COTS software--either one-size-fits-all versions or a mosaic of two or more relational COTS applications.
		It is a problem that stems from not using the legacy system in the transformation process.
		To avoid causing problems in the installed system, anyone who performs future upgrades, enhancements or maintenance on an adapted COTS system must understand all these features and options and the sometimes-bizarre manner in which they are deployed.
	www.adbms.org /articlesLegacy.htm (3968 words)

	Legacy Health System, Portland, Oregon - Nursing Employers
		The Legacy system includes two tertiary hospitals, including a Level 1 Trauma Center, two community hospitals, the largest children's hospital in Oregon, the oldest home health agency in Oregon, Primary Care Clinics and a full-service research facility.
		As a healthcare system, our mission is to enhance the quality of life by improving the health of the communities we serve.
		Legacy knows the importance of creating a positive culture, with opportunities for employee participation in problem solving and decision-making and ensuring leaders are accessible to employees.
	www.minoritynurse.com /nurse_emp/profiles/or_legacy.html (501 words)

	HRIS Legacy System
		The term legacy system is used by information technology experts during a transition to a new company-wide system.
		Legacy systems refer to any systems that exist within the company that are or will be separate from the new system.
		For example, if a company’s human resource information system is incompatible with its ERP, the company’s IT may refer to HRIS as a “legacy system.”
	www.hrvillage.com /hrfaqs/software/hris-legacy.htm (64 words)

	NOVELL CUSTOMER SHOWCASE: Legacy Health System (Site not responding. Last check: 2007-10-13)
		Legacy Health System is the largest not-for-profit healthcare system in Oregon with 7,800 full- and part-time employees.
		The Legacy system provides an integrated network of healthcare services, including acute and critical care, inpatient and outpatient treatment, community health education and a variety of specialty services.
		Legacy Health System has more than 900 doctors who require remote access to clinical applications.
	www.novell.com /success/legacy.html (828 words)

	Legacy system (Site not responding. Last check: 2007-10-13)
		While legacy systems fulfil a vital need within organizations, technology changes or the organization's growth may necessitate the migration of the legacy system or its data.
		An organization may desire to change the platform that the legacy system resides on, such as moving from a mainframe environment to a server environment.
		The goal of legacy transformation is to retain the value of the legacy asset on the new platform.
	www.hzeeland.nl /~ylin/examples.htm (1010 words)

	Legacy System Migration
		Legacy systems are systems that have fallen behind current technologies but are vital to a business.
		As the networks or applications get older their problems multiply, components fail, new components may not exist, support is no longer provided, and performance is dated.
		These systems are found in warehouse environments, POS networks, telecommunications, electric utilities, and industrial controls.
	www.hudsonbusiness.net /network/legacy_migration.html (154 words)

	Why support for legacy remote units can be crucial for your business
		Legacy monitoring equipment can be a stumbling block to network expansion
		A network monitoring system that is based on legacy remotes can't change to meet the needs of a growing network.
		And if the master breaks down, it may not be possible to repair it, and the entire network monitoring system — that hundred-thousand-dollar investment — is simply lost.
	www.dpstele.com /dpsnews/legacy_rtu_support.html (543 words)

	Legacy Free Personal Computers
		The basic goal of these requirements is that the operating system, devices, and end users cannot detect the presence of ISA slots or devices, a legacy floppy disk controller (FDC) as well as PS/2, serial, parallel, and game ports.
		However, this can potentially cause the system to stop working when the system is running Windows NT®, and the interrupt is shared with the boot device and the Host Controller generates an IRQ before the USB ISR is chained.
		System recovery media must not be provided on floppy disks--that is, it should be provided on bootable CD or DVD media.
	www.dewassoc.com /kbase/legacy.htm (2722 words)

	Legacy Health System Partners with Leading Clinical Diagnostic Equipment Company
		About Legacy Health System Legacy Health System is an Oregon-based not-for-profit, tax-exempt corporation and, with more than 7,800 full- and part-time employees, is one of the largest private sector employers in the four-county Portland metropolitan area.
		Legacy has five hospitals, including Legacy Emanuel Hospital & Health Center (which is also the location for Legacy Emanuel Children's Hospital), Legacy Good Samaritan Hospital & Medical Center, Legacy Meridian Park Hospital, Legacy Mount Hood Medical Center, and Legacy Salmon Creek Hospital, in Vancouver, Washington, which opened in August 2005.
		Also included in the Legacy system are hospice services, a full-service research facility, and specialty and primary care clinics.
	www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/02-07-2006/0004276344&EDATE= (454 words)

	Approaches to Legacy System Evolution
		The approach that one chooses to evolve software-intensive systems depends on the organization, the system, and the technology.
		We believe that significant progress in system architecture, system understanding, object technology, and net-centric computing make it possible to economically evolve software systems to a state in which they exhibit greater functionality and maintainability.
		This report outlines a comprehensive system evolution approach that incorporates an enterprise framework for the application of the promising technologies in the context of legacy systems.
	www.sei.cmu.edu /publications/documents/97.reports/97tr014/97tr014abstract.html (172 words)

	Optimize Magazine > Business Management > Tuning Up Legacy Systems > August 2003 (Site not responding. Last check: 2007-10-13)
		When the knowledge embodied in legacy systems constitutes a significant corporate asset, the systems can't simply be discarded—they must be replaced.
		CIOs responsible for legacy systems are well-advised to adopt and communicate a strategy for sustaining and modernizing legacy systems.
		Second, the difficulty of replacing the failing legacy system must not be underestimated.
	www.optimizemag.com /article/showArticle.jhtml?articleId=17700955 (1004 words)

	CompuSven, Inc.: Professional Services Offerings :: email migration and upgrade solutions. (Site not responding. Last check: 2007-10-13)
		Once users see their familiar data in the new e-mail system you may also be able to use this as a training aid for the new e-mail system.
		When implementing a new e-mail system, an inventory, needs analysis, desktop analysis and current topology all need to be taken into account so that the new e-mail system is properly configured from a physical and logical standpoint.
		CompuSven's system assessment and topology design consists of a proven methodology for getting the information, and then providing each company with a plan very specific to their needs.
	www.compusven.com /services/offering.html (1335 words)

	Agility Selected by Legacy Health System to Equip the Newest and One of the Most Technologically Advanced Hospitals in ... (Site not responding. Last check: 2007-10-13)
		Legacy Salmon Creek Hospital is the newest of Legacy's facilities and is expected to be one of the most technologically advanced hospitals ever built in the Pacific Northwest.
		Legacy has signed a contract with Agility for RFID-enabled equipment management and plans to leverage the AgileTrac infrastructure throughout the hospital.
		Legacy Salmon Creek Hospital is the largest healthcare construction project in the state of Washington.
	press.arrivenet.com /technology/article.php/583445.html (685 words)

	NetLingo.com Dictionary of Internet Terms: Online Definitions & Text Messaging (Site not responding. Last check: 2007-10-13)
		A legacy system may also be an entrenched data management platform that contains proprietary, custom-designed software.
		Fortunately, new software products are designed to work with legacy systems (or at least to import data from them).
		A typical legacy system is a database management system (DBMS) running on mainframes or minicomputers (versus new technology solutions, which continue to move to PC-based systems).
	www.netlingo.com /lookup.cfm?term=legacy+system (116 words)

	adores.org - legacy health system (Site not responding. Last check: 2007-10-13)
		Legacy Health System is a hospital system in Portland, Oregon, offering inpatient, outpatient, tertiary, trauma, home care and hospice services to men, women and children.
		Legacy Health System is a hospital system in Portland, Oregon, offering inpatient, outpatient, tertiary, home care and hospice services to men, women and children.
		Legacy Health System is the largest not-for-profit group of hospitals and home health agencies in Oregon.
	www.adores.org /sites/legacy_health_system (1065 words)

	OOPSLA05: Legacy System Exorcism
		Legacy System Exorcism by Pareto's Principle Kristoffer Kvam Telenor Mobile Norway, one of the biggest wireless providers in the world
		There were enormous amounts of duplication, no structure, etc., etc. People there said it took a year before you were really able to work on the system.
		It dipped because all of a sudden the number of transactions went up by 40 million or something, and all their resources went toward dealing with that.
	wiki.cs.uiuc.edu /OOPSLA05/Legacy+System+Exorcism (407 words)

	Legacy distributed control system extension, upgrade and migration
		As one of the largest independent systems integrators in North America, we help manufacturers select, engineer, implement and support the process control and information integration solutions best for their production environment.
		As a large independent control system integrator, every quarter we engineer millions of dollars of solutions using major and lesser-known control systems and components—whatever best meets the each client’s needs.
		Whatever your legacy system extension or migration goal, if you want a conversions partner who has deep experienced in legacy and modern controls, is committed to providing open and supportable solutions and is independent and resourceful, consider RoviSys.
	www.rovisys.com /rovisys/business/CSI/legacy-dcs-migration.asp (596 words)

	Legacy System Modernization . Com -Main Page-
		Unified Modeling Language (UML) documentation is generated to fully document the legacy system as well as the modernized system which is generated into platform specific C++, J2EE/Java, or C#.
		TSRI legacy system modernization begins by applying transformation rules to generate a platform independent model from the legacy application source code.
		TSRI was contracted to assess the system, transform its legacy Wang COBOL into C++, and re-factor the modern sytem.
	www.legacysystemmodernization.com (3243 words)

	Legacy-Free Hardware and BIOS Requirements
		The basic goal for these requirements is that the operating system, devices, and end users cannot detect the presence of the following: ISA slots or devices; legacy floppy disk controller (FDC); and PS/2, serial, parallel, and game ports.
		However, this can potentially cause the system to stop working when the system is running Windows NT®, and the interrupt is shared with the boot device and the Host Controller generates an IRQ before the USB ISR is chained.
		In order to support legacy applications in MS-DOS Virtual Machines, the command interpreter must behave the same as on a legacy system, which requires the full INT 9 support provided by legacy systems.
	www.microsoft.com /whdc/archive/Lf.mspx (2468 words)

	The Meaning of Legacy Systems (Site not responding. Last check: 2007-10-13)
		To facilitate research under the SEBPC programme's theme on legacy systems, some agreement must be reached on what the term "legacy system" means, what problems such systems have, and what the characteristics of solutions may be.
		This report addresses these points providing a possible definition of the term "legacy system", and discussing failures and solutions.
		The definition is approached from three levels to elicit a clearer understanding of the problems facing the various parts of an organisation with respect to its legacy systems.
	www.dur.ac.uk /CSM/SABA/legacy-wksp1/meaning.html (119 words)

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