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Definition
| A person who gains unauthorized access to a computer network for profit, criminal mischief, or personal pleasure. |
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| Rogue software programs that are difficult to detect, which spread rapidly through computer systems, destroying data or disrupting processing and memory systems. |
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| Software designed to detect, and often eliminate, computer viruses from an information system. |
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| Program code defects or errors. |
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| Specific controls unique to each computerized application. |
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| Controls to ensure that data files on either disk or tape are not subject to unauthorized access, change, or destruction. |
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| online transaction processing (OLTP) |
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Definition
| Transaction processing mode in which transactions entered online are immediately processed by the computer. |
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Definition
| Plan for running the business in the event of a computer outage. Includes organizational procedures as well as backup processing, storage and database capabilities. |
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Definition
| Duplicating all the processes and transactions of a server on a backup server to prevent any interruption in service if the primary server fails. |
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Definition
| Linking two computers together so that the second computer can act as a backup to the primary computer or speed up processing. |
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Definition
| The coding and scrambling of messages to prevent their being read or accessed without authorization. |
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Definition
| A digital code that can be attached to an electronically transmitted message to uniquely identify its contents and the sender. |
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Definition
| A method for defining system inputs, processes, and outputs and for partitioning systems into subsystems or modules that show a logical graphic model of information flow. |
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Definition
| Primary tool for structured analysis that graphically illustrates a system's component processes and the flow of data between them. |
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Term
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Definition
| Software design discipline encompassing a set of design rules and techniques for designing systems from the top down in hierarchical fashion. |
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Term
| Computer-aided software engineering (CASE) |
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Definition
| Automation of step-by-step methodologies for software and systems development to reduce the amounts of repetive work the developer needs to do. |
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Term
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Definition
| The determination of how costs, time, and personnel are assigned to different phases of a systems development project. |
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| A review of a specification or design document by a small group of people carefully selected based on the skills needed for the particular objectives being tested. |
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Term
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Definition
| The process of discovering and eliminating th errors and defects-the bugs-in program code. |
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