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IB Topic 1 - 1

Systems in Organization

TermDefinition
Change management the controlled identification and implementation of required new and/or different elements within a computer system.
Compatibility the capacity for two systems to work together without having to be altered to do so.
Legacy systems an old method that continues to be used, typically because it still functions for the user's needs, even though newer technology or more efficient methods of performing a task are now available.
Remote host a server that is in a different location from the company or individual that is hosting it
Software-as-a-service(SaaS) is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network, typically the Internet.
Parallel running the new system is introduced alongside the existing system.
Direct-changeover simplest method to change from an existing system to a new one.
Phased conversion involves splitting a new information system into a number of parts or modules that are introduced one step at a time, so that all users are introduced to the same modules in the system at the same time.
Acceptance testing testing conducted to determine if the requirements of a specification or contract are met.
Debugging Identify and remove errors from computer hardware or software.
Beta testing last stage of testing and normally can involve sending the product to sites outside the company for real-world exposure, often on the Internet.
User documentation explains how to use something to people or users of computers systems.
User training resources, companies and services dedicated to helping educate users on computer-related topics.
Data loss an error condition in information systems in which information is destroyed by failures or neglect in storage, transmission, or processing. Can be malicious or natural disaster.
Failover a method of protecting computer systems from freezing, rebooting or ceasing to function and in which standby equipment automatically takes over.
Removable media any type of storage device that can be removed from a computer while the system is running.
Releases The distribution of an initial or new and upgraded version of a computer software product; the distribution can be both public or private.
Update software file that contains fixes for problems found by other users or the software developer
Patch piece of software designed to update a computer program or its supporting data, to fix or improve it.
Examples of removable media CDs, DVDs, Blu-Ray disks, diskettes and USB drives.
Redundancy the inclusion of extra components that are not strictly necessary to functioning, in case of failure in other components.
Incompatibility characteristic of systems which cannot operate satisfactorily together on the same system.
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