DATA AND DATABASES

DATA AND DATABASES

1. YOU HAVE ALREADY BEEN INTRODUCED TO THE FIRST TWO COMPONENTS OF INFORMATION SYSTEMS: HARDWARE AND SOFTWARE. HOWEVER,THOSE TWO COMPONENTS BY THEMSELVES DO NOT MAKE A COMPUTER USEFUL.

   • DATA, INFORMATION, AND KNOWLEDGE
     • THERE HAVE BEEN MANY DEFINITIONS AND THEORIES ABOUT DATA, INFORMATION, AND KNOWLEDGE.
       • WISDOM
         • KNOWLEDGE
           • INFORMATION
             • DATA
               • DATABASES
                 • THE GOAL OF MANY INFORMATION SYSTEMS IS TO TRANSFORM DATA INTO INFORMATION IN ORDER TO GENERATE KNOWLEDGE THAT CAN BE USED FOR DESICION MAKING.
               • WHY DATABASES?
                 • DATA IS A VALUABLE RESOURCE IN THE ORGANIZATION.HOWEVER, MANY PEOPLE DO NOT KNOW MUCH ABOUT DATABASE TECHNOLOGY.
               • SIDEBAR:WHAT IS METADATA?
                 • THE TERM MATADATA CAN BE UNDERSTOOD AS " DATA ABOUT DATA " EXAMPLES OF METADATA OF DATABASE ARE:
                   • NUMBER OF RECORDS
                     • DATA TYPE OF FIELD
                       • SIZE OF FIELD
                         • DESCRIPTION OF FIELD
                           • DEFAULT VALUE OF FIELD
                             • RULES OF USE
               • SUMMARY
                 • IN THIS CHAPTER, WE LEARNED ABOUT THE ROLE THAT DATA AND DATABASES PLAY IN THE CONTEXT OF INFORMATION SYSTEMS.