Introduction to Databases

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Presentation transcript:

Introduction to Databases 5.1.1.1 Understand what a database is. 5.1.1.2 Understand the difference between data and information. 5.1.1.3 Understand how a database is organized in terms of tables, records and fields.

A database is an organised collection of data A database can be computerized or listed on hard copy (books / listings)

Telephone directory and TV listings TV program listings

Advantages of computerized databases Increased speed for searching Stores large amount of information.

Difference between data and information Example: Data: Buddy birthdate: 12th May 1995 Processing: How old is buddy? (2015 – 1995 = ?) Information: 20 years

A database file stores data in tables

The End Study Databases01 Notes https://msjenniferblog.wordpress.com/ecdl/ecdl-senior-4/

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