Computer Basics Quiz 19 Questions and Answers

______Is the most widely used medium for telecommunications





______Is widely used medium of communication for cable television systems





. ______Cable consists of one or more filaments of glass fiber wrapped in protective layers that carries data by means of pulses of light





. ______Is a computer network used for communications among computers and different inform-ation technological devices close to one person





______Is a collection of concep-tual tools for describing data, data relationships, data semantics and constraints





Association among two or more entities called





DDL stands for





SDL stands for





DML stands for





____Is the language that enable user to access or manipulate data as organized by appropriate data model







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