Code Division Multiple Access CDMA to improve the efficiency and quality of

Code division multiple access cdma to improve the

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* Code Division Multiple Access (CDMA) -to improve the efficiency and quality of digital communications, it transmits multiple encoded messages over a wide frequency and then decodes them at the receiving end. *Communication media -(channels) connect sender and receiver devices. They can be conducted or radiated. * Computer fraud -the unauthorized use of computer data for personal gain. *Computer literacy -skill in using productivity software, such as word processors, spreadsheets, database management systems, and presentation software, as well as having a basic knowledge of hardware and software, the Internet, and collaboration tools and technologies. * Computer- a machine that accepts data as input, processes data without human intervention by using stored instructions, and outputs information. *Conducted media -provide a physical path along which signals are transmitted, including twisted pair copper cable, coaxial cable, and fiber optics *Confidentiality- a system must prevent disclosing information to anyone who is not authorized to access it. * Control unit -tells the computer what to do, such as instructing the computer which device to read or send output to. * Controller -a hardware and software device that controls data transfer from a computer to a peripheral device (examples are a monitor, a printer, or a keyboard) and vice versa. * Convergence -refers to integrating voice, video, and data so that multimedia information can be used for decision making. *Cookies -small text files with unique ID tags that are embedded in a Web browser and saved on the user’s hard drive. * CPU case -a computer chassis or tower. It is the enclosure containing the computer’s main components. *Create, read, update, and delete (CRUD) -refers to the range of functions that data administrators determine who has permission to perform certain functions. * Cybersquatting -registering, selling, or using a domain name to profit from someone else’s trademark. * Data communication -the electronic transfer of data from one location to another. * Data dictionary -stores definitions, such as data types for fields, default values, and validation rules for data in each field. *Data encryption- transforms data, called plaintext or cleartext, into a scrambled form called ciphertext that cannot be read by others. *Data hierarchy -the structure and organization of data, which involves fields, records, and files. * Data mart -usually a smaller version of a data warehouse, used by a single department or function. * Data model -determines how data is created, represented, organized, and maintained. It usually contains data structure, operations, and integrity rules. *Data warehouse -a collection of data from a variety of sources used to support decision making applications and generate business intelligence.
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  • Fall '16
  • Data Mining, Computer network, Relational model, Database management system

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