by webadmin | Jul 4, 2013 | general
Legacy systems are old technology components. They are usually computer systems that were implemented long in the past, but are still currently in use. In spite of the fact that there are several other systems that have been developed that out shine the current system, legacy systems are still heavily relied upon. Legacy systems support institutions such as banks, air traffic control in airports, nuclear power plants, military facilities and even the United States NASA Space Shuttle program. There are several reasons why the users of these legacy systems still continue to use them. For starters, if the user feels that the system adequately meets their requirements then they employ the adage “Do not fix what’s not broken.” The amount of capital, human working hours, and effort required to introduce a new system is a lot. Therefore, the argument to bring in entirely new systems that the current legacy systems can already tackle is not very compelling. It would cost the organization an arm and a leg. Even the seemingly simple task of redesigning the legacy systems is gargantuan in nature. Another explanation why legacy systems still thrive is that they eliminate the need for re-training staff. Should the new systems that replace the current legacy systems be implemented successfully, they will still need users to make use of them. Therefore, should the new system be different (and it inevitably will be) in any way, it would require an organization wide retraining exercise, to ensure that they are oriented to use it. The legacy systems are used in nearly every...
by webadmin | Jul 2, 2013 | general
Software development is when a user desires to create new software or, usually, upgrade their already existing system for a more efficient one. The users can be as diverse and large as an entire corporation or organization, a team that relies heavily on said software or even a small group of individuals. Once they establish that they wish to create a new system or upgrade said existing system, they will be required to devise and implement a master plan which will lead to the creation of this new system. Several steps are required to complete this software development process. This includes, but is not limited to, working out what the system needs to accomplish, developing it accordingly, writing out the code, thorough testing and debugging, and finally launching, should everything work out. This development process can take as few as a motivated programmer to several or even hundreds of developers. To establish what is required from the system, in other words, the problem(s) that it must solve, there has to be research. Sometimes the problem can be a common one, requiring the creators of new software to make theirs to solve the problem in a way that puts their product ahead of their competitors. However the problem can be entirely new, requiring the team to come up with a method of resolving it. Finally, it can be a recent problem that has been discovered, making the previous software obsolete, requiring a new creation to resolve said problem. And so, at this point of software development, the goals that are meant to be attained are set out. Once...
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