Week 1.1 (Friday)

Week 1.1 (Friday) - 7/13/2009 1 Introduction to...

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Unformatted text preview: 7/13/2009 1 Introduction to Introduction to database systems database systems database systems database systems SIT103 Week 1 – lecture 2 Geelong Data versus information Data versus information y What is data? ◦ Raw facts; building blocks of information ◦ Unprocessed information y What is information? ◦ Data processed to reveal meaning ◦ Accurate, relevant, and timely information is key to good decision making 2 T2-2009 What is a database? What is a database? y A shared integrated computer structure that houses ◦ End user data (raw facts) ◦ Meta-data (data about data, i.e. characteristics of each datum) 3 7/13/2009 2 What is a DBMS? What is a DBMS? y Database management system ◦ A collection of programs that manage database structures and control access to data ◦ Facilitates sharing of data among multiple users and applications ◦ Enables efficient and effective data management 4 T2-2009 The benefits of a DBMS The benefits of a DBMS y End users have better access to information y How is this done? ◦ DBMS provides an integrated view to an organization’s data and operations ◦ Reduces data inconsistencies and errors ◦ Enables ad-hoc queries 5 T2-2009 The benefits of a DBMS (cont’d) The benefits of a DBMS (cont’d) 6 T2-2009 7/13/2009 3 Characterizing databases Characterizing databases...
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This note was uploaded on 09/27/2009 for the course SEB 323 - S taught by Professor Professor during the Three '09 term at Deakin.

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Week 1.1 (Friday) - 7/13/2009 1 Introduction to...

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