Introduction to Oracle Database: Architecture & History

Introduction to Oracle
Database

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3-tier Architecture
DATABASE
DATA
End-User Application Server
Application Softwares
Application Logic
Websites
Network Network

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DATA
Every organization has some information needs.
•A library keeps a list of members, books, due dates, and fines.
•A company needs to save information about its employees,
departments, and salaries.
These pieces of information are called data.

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Database
•A database is an organized collection of data for one
or more purposes, usually in digital form.