introduction to oracle dba
TRANSCRIPT
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Introduction to Oracle Introduction to Oracle Database AdministrationDatabase Administration
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3-tier Architecture
DATABASE
DATA
End-User Application ServerApplication Software'sApplication LogicWebsites
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.
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Oracle Database
ORACLE
DB2
INFORMIX
SQL SERVER
SYBASE
50% of Market Share
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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.
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Relational Database
DATABASE
DATA
Tables
End-User
SQL• Retrieve Data• Insert Data• Modify Data• Remove Data
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History of Oracle Database
ORACLE
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History Oracle Database
• In 1977, Larry Ellison, Bob Miner and Ed Oates founded Software Development Laboratories
• After reading a paper by Codd in IBM Journal of Research & Development, they created Oracle. (written in Assembly language PDP)
• Version 2.0 of Oracle was released in 1979 & The company changed its name to Relational Software Inc. (RSI)• In 1982, RSI was renamed to Oracle Corporation.• In 1983, Oracle released version 3.0, which was rewritten in C.
• In 1984, Oracle 4.0 & In 1985 version Oracle 5.0 released.
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• In 1986, Oracle goes public on the NASDAQ exchange.• In 1988, Oracle version 6.0 was released. (It provided row-level locking, hot backup and PL/SQL)• In 1992, Oracle 7.0 released. It provided better performance,
administrative utilities, application development tools, security features, stored procedures, triggers and declarative integrity.
• By 1999, Oracle released Oracle 8i. Supported for XML, Java Virtual Machine (JVM) to run Java program in Database and also scalability, which was required for internet databases.
• In 1997, Oracle released Oracle 8.0. It started embracing Java. Partitioning, support for images, large text, external data etc.(lobs) are provided. *Started support for Object in database (Object-Relational DBMS)
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History Oracle Database
• In 2001, Oracle9i was released. Allows Oracle to run on RAC.• In 2003, Oracle10g was released, where g stands for Grid computing.
• In 2007, Oracle has released Oracle11g.
Employing nearly 1,08,000 people worldwide as of 31 May 2011.
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Responsibilities of Administrator
DATABASE
Enforcing Data INTEGRITY
ASSIST PROGRAMMERS
MaintainingSECURITY
ProvidingAVAILABILITY
RECOVERING DATA
PERFORMANCE
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Questions?
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