Tag: Dot

A database or database management system that stores information in tables—rows and columns of data—and conducts searches by using data in specified columns of one table to find additional data in another table. In a relational database, the rows of a table represent records (collections of information about separate items) and the columns represent fields… Continue reading Relational Database Management System

The storage of multiple copies of identical data. The process of limiting excessive copying, update, and transmission costs associated with redundant data is called “redundancy control.” Database replication (see definition) is a strategy for redundancy control with the intention to improve system performance. “Redundancy” may also be used to refer to backup systems that take… Continue reading Redundancy

A collection of data items arranged for processing by a program. Multiple records are contained in a file or data set. The organization of data in the record is usually prescribed by the programming language that defines the record’s organization or by the application that processes it. Typically, records can be of fixed or variable… Continue reading Record

A degree of computer responsiveness that a user considers to be adequately immediate or that allows the computer to keep pace with some external process.

A method of building computer systems in which the system is programmed and implemented in segments, rather than waiting until the entire project is completed for implementation. RAD uses such tools as CASE (see Computer Aided Software Engineering Tools) and visual programming (see definition).

A software development process whose purpose is to evaluate the suitability of a potential application for production.

The computer industry standard network protocol or model for computer-to-computer communications. Developed by the International Standards Organization, OSI consists of seven layers or modules arranged in a hierarchy (see below) with each layer performing a function that is dependent on the more elementary (lower) layer. The system is “open” in the sense that layers are… Continue reading Open Systems Interconnection (OSI) Standard

A computing environment that allows users to access and utilize data and software across multiple platforms. Incompatible hardware platforms, operating systems, and other application software are tied together through the use of industry-standard system components. An open systems environment facilitates systems integration by creating the means for resource sharing in an environment in which hardware,… Continue reading Open systems Environment

A standard database access method developed to make it possible to access any data from any application, regardless of which database management system (DBMS) (see definition) is handling the data. ODBC does this by inserting a middle layer, called a database driver, between a database application and the DBMS. The purpose of the driver is… Continue reading Open Database Connectivity (ODBC)

A type of computer processing in which the computer responds immediately to user requests. Each request is considered to be a transaction. Automatic teller machines are examples of transaction processing. The opposite of transaction processing is batch processing, in which a batch of requests is stored and then executed all at one time. Transaction processing… Continue reading Online Transaction Processing (OLTP)