what is data? - raw data that collect from customer., what is information? - a data that have been processed ,interpreted,organized or structured to provide context , what is knowledge? - information of which someone is aware, what is information policy? - the set of rules, formal and informal, that directly restrict, encourage or otherwise shape flows of information., Data base management system - It allows users to create ,store and access data by adding ,deleting ,modifying , analysing and managing, Hierarchical database management system - a data model in which data is represented in the tree-like structure ., What is the meaning of knowledge storage? - Once they are discovered,documents, patterns and expert rules must be stored so they can be retrieved and used by employes , which one accurate about poor security ? - access and dissemination of information my be out of control , because thhere is little control, what the characteristics of data warehouses ? - data are organized by subject and data remain as it is once is stored, what the meaning of data mining ? - process of accessing and analysing data in a data warehouse or data mart ,

CHAPTER 3 DATA AND DATABASE

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