Business Information Systems by Elizabeth Hardcastle

business-info-systemsIt is important to distinguish between data and information. Data is a raw fact and can take the form of a number or statement such as a date or a measurement. It is necessary for businesses to put in place procedures to ensure data are recorded. For example, to ensure a call centre operator includes the postcode of every customer this can be written into their script and a validation check performed to check these data have been entered into the system. A common definition of information is that it is data that have been processed so that they are meaningful (Oz and Jones, 2008). This requires a process that is used to produce information which involves collecting data and then subjecting them to a transformation process in order to create information. Some examples of information include a sales forecast or a financial statement. As stated information is generated through the transformation of data. This can be achieved using a number of different transformation or data processes. Some examples of data processes include aggregating which summarises data by such means as taking an average value of a group of numbers. Classification places data into categories such as on-time and late deliveries. Sorting organises data so that items are placed in a particular order, for example listing orders by delivery date. Calculations can be made on data such as calculating an employee’s pay by multiplying the number of hours worked by the hourly rate of pay. Finally data can be chosen based on a set of selection criteria, such as the geographical location of customers.

 

In this book the readers will read Defining Data and Information, Defining Systems, Defining Information systems, Business Information systems, Types of business information system, Hardware, Input devices, Central Processing Unit (CPU), Internal and External Memory, Output devices, Major Categories of computers, Systems software, Application software, Database systems, Organizing data in a database, Database software, Retrieving Data from a Database, Business intelligence, Network components, The internet and world-wide web, Web-Enabled Business, Intranets and extranets, The World Wide Web, Web browsers and servers, E-business, E-commerce, Acquiring information systems, Bespoke development, Off-the-shelf software, End-user-developed software, Factors affecting software acquisition, Developing information systems, The systems development life cycle, Systems Development Methodologies, SSADM, Rapid applications development (RAD), The spiral model, The Capability Maturity Model, Information systems security, Security threats to information systems, Reducing the threat to information systems, Types of controls, Techniques for controlling information systems, Security threats to Internet services and much more.

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