IS-535_Midterm_Studyguide_Answers_UpdateII

IS-535_Midterm_Studyguide_Answers_UpdateII - MaungAung...

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Maung Aung IS – 535 Study Guide Answers 1. Why Information Systems so important? Information Systems are not just technology, it is also a business  perspectives.  Information Systems are a foundation for conducting  business today.  Information Systems are essential tools for helping  organizations operate in a global economy.  Many companies are trying to  become more competitive and efficient by transforming themselves into  digital firms where nearly all core business processes and relationships  with customers, suppliers, and employees are digitally enable.  Businesses  today use information systems to achieve six major objectives: Operational excellence, new products, services, and business models;  customer/supplier intimacy; improved decision making; competitive  advantage; and day to day survival. 2. What are the features of an organization? All modern organizations have certain characteristics.  They are  bureaucracies with clear-cut divisions of labor and specialization.  Organizations arrange specialists in a hierarchy of authority in which  everyone is accountable to someone and authority is limited to specific  actions governed by abstract rules to procedures Organizations try to hire and promote employees on the basis of technical  qualifications and professionalism.  The organization is devoted to the  principle of efficiency: maximizing output using limited inputs.  Other  features of organizations include their business processes, organizational 
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culture, organizational politics, surrounding environments, structure,  goals, constituencies, and leadership styles.   3. How DBMS can solve the problems of the Traditional File Environment?  (P.225) A DBMS reduces data redundancy and inconsistency by minimizing  isolated files in which the same data are repeated.  The DBMS may not  enable the organization to eliminate data redundancy entirely, but it can  help control redundancy.  Even if the organization maintains some  redundant data, using a DBMS eliminates data inconsistency because the  DBMS can help the organization ensure that every occurrence of redundant  data has the same values.  The DBMS uncouples programs and data,  enabling data to stand on their own.  Access and availability of information  will be increased and program development and maintenance costs  reduced because users and programmers can perform ad hoc queries of  data in the database.  The DBMS enables the organization to centrally  manage data, their use, and security.
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