Computers, Computer Science The outputs from Module 1, the Requirements Analysis Module. It comprises Current Services Description, Requirements Catalogue, User Catalogue, and Selected Business System Option.

Computers, Computer Science A technique for analysing data to its logical groupings. A set of raw, i.e., unstructured, data is reduced through a set of transformations (normalization) to basic data groups in which each item is grouped with its sole and full determinant. The effect of performing RDA, as a step in data design, is to reduce data redundancy and gain flexibility. During the normalization process, it is important that information is never lost, i.e., that all the original connections between data items are maintained. The output from RDA is a set of relations that are in the state known as Third Normal Form.

Computers, Computer Science A method for providing an objective comparison between options. The costs of developing and operating each proposed system are calculated, and set off against the benefits of installing that system. It is the key supporting document for the options, both BSO and TSO, and will usually carry most weight with the project board who will make the selection.

Finance Technique for assessing the degree of uncertainty whereby various possibilities are input to determine possible outcomes.

Computers, Computer Science A set of procedures to identify risks to aspects of the system. These aspects may be hardware, security, software, physical installation, or any area where a threat is perceived. As well as identifying the risks, the practitioners must assess them, and prepare contingency measures to counter the risk. The aim is to reduce the risk to an acceptable level, but at an acceptable cost.

Computers, Computer Science An examination of the effects on an organization of either a Business System Option or Technical System Option. It is one of the supporting documents produced for each option presented, and covers issues of organization, staffing, and work practices.

Computers, Computer Science An area within the content of a hypertext node (e.g. a Web page) which is the source or destination of a link. A source anchor may be a word, phrase, image, or possibly the whole node. A destination anchor may be a whole node or some position within the node.

Computers, Computer Science Acronym for American National Standards Institute. The American National Standards Institute (ANSI) is the foremost standards organization in the U.S. ANSI is divided into a number of committees that have responsibility for approving standards that cover a particular area.

Computers, Computer Science ANSI standard for the C programming language.

Computers, Computer Science The portion of the CPU that performs arithmetic and logical operations on operands under control of the program instructions.

Computers, Computer Science A set of processing which must succeed or fail as a whole for each input. If there is a failure before the success unit is completed, and the processing aborts, the system is restored to the state it is in before the success unit began. The success unit may be a complete update, a complete inquiry, an inquiry-update pair, or a predefined number of database accesses in an inquiry, depending upon the function's requirements.

Computers, Computer Science The control unit within the CPU coordinates all activities of the computer by determining which operations should be carried out and in what order. It then transmits coordinating control signals to the computer components.