CHAPTER 1:
DATABASES INTRODUCTION
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Introduction
A database is a collection of data organized in a
manner that allows access, retrieval and use of
that data.
„In manual database, data might be recorded on
paper and stored in a filing cabinet.
„In a computerized database, data is stored in an
electronic format on a storage medium
„Database software, also called a database
management system (DBMS)
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What is a database?
A Database (DB)
„is a collection of related files stored together
„allows you to define the relationship between these
files
A Database Management System (DBMS)
„such as MS Access, FoxPro, can help you to create,
maintain and report the data and file relationships
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Database Systems: An Overview
Database Systems
„Overall collection of different database software
components
Databases contain the following 4 parts:
„Database application programs
„Front-end (i.e. client) components
„Database management system(s)
„Databases
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Database Systems: An Overview
Database application programs
„Special-purpose software that is designed and
implemented by users or implemented by third-party
software companies
Front-end (i.e. client) components
„General-purpose database software designed and
implemented by a database company or delivered as
third-party software
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Database Systems: An Overview
Database management systems(s)
„Manage data stored in a database
„2 views
â User’s view
â DBMS’s view
Database
„Tables, database container
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END
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