Management
BIS315
Database Management Systems
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Chapter 1
Introduction to
Databases
Dr. Jihene Kaabi Harrath
University Of Bahrain
First Semester 2010-2011
1
•
A database is a collection of related data.
• A Database Management System (DBMS) is the software that
BIS315
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Database Management Systems
Introduction
manages and controls access to the database.
• A database application is simply a program that interacts with the database at some point in its execution.
• A database system is a collection of application programs that interact with the database along with the DBMS and the database itself. Dr. Jihene Kaabi Harrath
University Of Bahrain
First Semester 2010-2011
2
• Some uses of database systems:
Purchases from the supermarket,
BIS315
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Database Management Systems
Introduction
Purchases using your credit card,
Booking a holiday at the travel agents,
Using the local library,
Taking out insurance,
Renting a video,
Using the Internet,
Studying at university.
Dr. Jihene Kaabi Harrath
University Of Bahrain
First Semester 2010-2011
3
• A File-Based system is a collection of application programs that perform services for the end-users such us the production of
BIS315
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Database Management Systems
File-Based Systems
reports. Each program defines and manages its own data.
• File-based systems were an early attempt to computerize the manual filing system that we are all familiar with.
• The manual filing system works well while the number of items to be stored is small.
• However, it breaks down when we have to cross-reference or process the information in the files.
Dr. Jihene
Database Management Systems
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Chapter 1
Introduction to
Databases
Dr. Jihene Kaabi Harrath
University Of Bahrain
First Semester 2010-2011
1
•
A database is a collection of related data.
• A Database Management System (DBMS) is the software that
BIS315
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Database Management Systems
Introduction
manages and controls access to the database.
• A database application is simply a program that interacts with the database at some point in its execution.
• A database system is a collection of application programs that interact with the database along with the DBMS and the database itself. Dr. Jihene Kaabi Harrath
University Of Bahrain
First Semester 2010-2011
2
• Some uses of database systems:
Purchases from the supermarket,
BIS315
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Database Management Systems
Introduction
Purchases using your credit card,
Booking a holiday at the travel agents,
Using the local library,
Taking out insurance,
Renting a video,
Using the Internet,
Studying at university.
Dr. Jihene Kaabi Harrath
University Of Bahrain
First Semester 2010-2011
3
• A File-Based system is a collection of application programs that perform services for the end-users such us the production of
BIS315
PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
Database Management Systems
File-Based Systems
reports. Each program defines and manages its own data.
• File-based systems were an early attempt to computerize the manual filing system that we are all familiar with.
• The manual filing system works well while the number of items to be stored is small.
• However, it breaks down when we have to cross-reference or process the information in the files.
Dr. Jihene