Introducing Database

Introducing Database:

A collection of computerized data files. In simple words it is computerized record keeping.
Examples of Database Applications
• Purchases from the supermarket
• Purchases using your credit card
• Booking a holiday at the travel agents
• Using the local library
• Taking out insurance
• Using the Internet
• Studying at university

Formal definition of Database• Shared collection of logically related data (and a description of this data), designed to meet the information needs of an organization.
• System catalog (metadata) provides description of data to enable program–data independence.
• Logically related data comprises entities, attributes, and relationships of an organization’s information.