LEC07_v1 - BUSI1003 Introduction to Management Information...

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1 BUSI1003 Introduction to Management Information Systems LEC 07 Managing Data Resources References: Laudon, K. C. and Laudon, J. P., Management Information  Systems: Managing the Digital Firm, 11th edition, Prentice-Hall,  2010.
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2 Main Focus Main Focus Data and Data Management Creating, Designing and  Managing a Database Database Trends
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3 What is Data Management? What is Data Management? Includes all of the activities involved  in making certain that an  organization s data are  accurate   and  up-to-date
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4 Control Data  Management Verification Storage Organization Retrieval Collection
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5
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6 A record describes an  Entity person, place, thing, event about which data must be  kept.  e.g., an order in a sales order file Each characteristic or quality describing a  particular entity is an  Attribute   e.g., order number, order date, order amount The unique identifier to identify a record in a  table is a  Key field  (primary key) field used to retrieve, update, sort records, value must  be unique File Organization: Terms & Concepts File Organization: Terms & Concepts
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7 Traditional File Processing Traditional File Processing
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8 Data redundancy and Data Inconsistency Program-Data Dependence Lack of Flexibility Poor Security Lack of Data-Sharing and Availability Problems with the Traditional Problems with the Traditional File Management File Management
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9 Puts a database management system  (DBMS) in between the application  programs and the database A DBMS: Permits an organization to centralize data,  manage them efficiently, and provide access 
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