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Introduction to SQL - Introduction to Database Systems...

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Introduction to Database Systems
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2 Objectives At the end of the session you will be able to: Define a database management system (DBMS) Classify the users of a DBMS State the benefit of the database approach over the conventional file processing system Describe the architecture of a DBMS Define the different data models
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3 What is a Database Management System?
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4 It’s a collection of interrelated data and a set of programs to access the data. Management of data involves Defining the structures for the storage of data Providing the mechanism for the manipulation of the data Providing for the security of data against unauthorized access
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5 The users of the DBMS is provided the following facilities among others: Adding empty files to the database Inserting new data into the existing files Retrieving data from the files Updating data in the files Deleting data from the files Removing existing files from the database The DBMS can be single-user or multi-user systems Data in a database needs to be integrated and shared
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6 Users of the DBMS The Application Programmers/Developers The End Users The Database Administrator
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7 Why use a Database System?
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