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Unformatted text preview: ta. Data processing: See processing Data processing system: A system that accomplishes data processing. It includes the necessary resources, which are people, procedures and devices needed to process the data. Data redundancy: Repetition of the same data items in more than one file. Data storage hierarchy: In data processing, organization of data into growing hierarchy for easy manageability. A typical data storage hierarchy consists of bits, characters, fields, records, files and database. Data transfer rate: The speed at which data is transferred from main memory to another medium on which data are recorded. For magnetic tape, the data transfer rate is equal to the product of the tape speed and recording density. In a network environment, it refers to the speed of transfer of data from one computer to another on the network. Data warehouse: A subject-oriented, integrated, time-variant, and non-volatile collection of data in support of management's decision-making process. Data warehousing: The process of creating a repository of integrated data for the purpose of decision support and analysis. Database: A collection of data files integrated and organized into a single comprehensive file system, which is arranged to minimize duplication of data and to provide convenient access to information within that system to satisfy a wide variety of user needs. Database administrator: One who is responsible for defining, updating, and controlling access to a database. Database client: A computer system that is primarily meant for accessing data from the database in a client-server database system. It runs those modules of the DBMS that facilitate specification of access requests. Database model: The manner in which the various files of a database are linked together. The four commonly used database models are hierarchical, network, relational, and object-oriented. Database schema: The database structure definition. Database server: The computer system which stores and manages the database in a client-server database system. It runs all modules of the DBMS that dea...
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This document was uploaded on 04/07/2014.

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