Information Processes and Technology Information Systems and Databases

+ Information Processes and Technology Information Systems and Databases

+ Information Systems n Information Systems perform a set of information processes requiring participants, data/information and information technology. They perform the information processes of collecting, organising, analysing, storing/retrieving, processing, transmitting/receiving, displaying.

+ Characteristics of Information Systems n Organisation of data into information: Data must be organised before it can be stored analysed by the information system. n Analysis of information to give knowledge: Access to information and the resulting knowledge is the purpose of an information system.

+ Types and purposes of information systems n Transaction processing systems: Collect, store, modify and retrieve the daily transactions of an organisation. n Decision support systems: Assist people to make decisions by providing information, models and analysis tools. n Expert systems: Provide information and solve problems that would otherwise require a person experienced in that field.

+ Types and purposes of information systems n Management information systems: Provides information for the organisations managers. An MIS presents basic facts about the performance of the organisation. n Office automation systems: Provides people with effective ways to complete administrative tasks in an organisation.

+ Examples of database information systems n Most information systems store data in a database. Information systems that use a database are called Database information systems. n A database is accessed by a Database management systems (DBMS). A DBMS has data within it.