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Harjinder Kaur, Lovely Professional University                             Unit 1: Database Fundamentals





                            Unit 1: Database Fundamentals                                       Notes


             CONTENTS
             Objectives
             Introduction

             1.1  Database Management Systems (DBMS)
             1.2  Database System Applications
             1.3  Characteristics of the Database Approach

             1.4  Advantages of DBMS
             1.5  Disadvantages of DBMS
             1.6  Database Architecture
             1.7  Summary
             1.8  Keywords

             1.9  Self Assessment
             1.10 Review Questions
             1.11 Further Readings

          Objectives


          After studying this unit, you will be able to:
              Define database management system
              Explain database system applications
              State the characteristics and the database approach

              Discuss the advantages and disadvantages of database
              Discuss the database architecture

          Introduction

          The information storage and retrieval has become very important in our day-to-day life. The
          old era of manual system is no longer used in most of the places. For example, to book your
          airline tickets or to deposit your money in the bank the database systems may be used. The
          database system makes most of the operations automated. A very good example for this is the
          billing system used for the items purchased in a super market. Obviously this is done with the
          help  of a  database  application  package.  Inventory  systems used  in  a  drug store  or  in  a
          manufacturing industry are some more examples of  database. We  can add  similar kind  of
          examples to this list.
          Apart from these traditional database systems, more sophisticated database systems are used in
          the Internet where a large amount of information is stored and retrieved with efficient search
          engines. For instance, http://www.google.com is a famous web site that enables users to search
          for their favorite information on the net. In a database we can store starting from text data to
          very complex data like audio, video, etc.




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