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Oracle DBA Online Training .pdf



Original filename: Oracle DBA Online Training.pdf
Title: Slide 1
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Introduction to Oracle
Database Administration

http://www.xoomtrainings.com/course/oracle-dba

3-tier Architecture
DATABASE

Network

End-User

Network

Application Server
Application Software's
Application Logic
Websites

DATA

http://www.xoomtrainings.com/course/oracle-dba

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.

http://www.xoomtrainings.com/course/oracle-dba

http://www.xoomtrainings.com/course/oracle-dba

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

http://www.xoomtrainings.com/course/oracle-dba

Oracle Database
DB2

ORACLE
50% of Market Share

INFORMIX

SYBASE

SQL SERVER

http://www.xoomtrainings.com/course/oracle-dba

Relational Database
• A relational database management system (RDBMS) is a
database management system (DBMS) that is based on the
relational model as introduced by E.F. Codd.

http://www.xoomtrainings.com/course/oracle-dba

http://www.xoomtrainings.com/course/oracle-dba

Relational Database

DATABASE

SQL

End-User

• Retrieve Data
• Insert Data
• Modify Data
• Remove Data

DATA
Tables


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