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Summary: 1
Part I: Introduction to Databases
Kostis Sagonas
2Introduction to Databases
Introduction to Database Concepts
Q Purpose of Database Systems
Q View of Data
Q Data Models
Q Data Definition Language
Q Data Manipulation Language
3Introduction to Databases
Database Management System (DBMS)
Q Collection of interrelated data
Q Set of programs to access the data
Q DBMS contains information about a particular enterprise
Q DBMS provides an environment that is both convenient and
efficient to use.
Q Database Applications:
+ Banking: all transactions
+ Airlines: reservations, schedules
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