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PRESENTATION ON ORACLE PL/SQL

FROMKEERTI.S.PATIL

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FOUNDER(1977)

Larry Ellison has served as Oracle's CEO for several years

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WHAT IS AC LE???

y Oracle is a program running in the background

y Oracle is made up of a set of processes running in youroperating system.

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o r cl pr o vi s f o llow i g so ft wa r s o luti on s

y database management systems (DBMS)y tools for database developmenty application serversy enterprise resource planning software (ERP)y customer relationship management software (CRM)y supply chain planning software (SCM)

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Competitors

y Oracle's some of main competitors in the databasebusiness are:

y * Microsoft SQL Servery * IBM with DB2 and Informixy * Sybase with their Sybase System

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y Oracle's main competitors in the middleware/application servers business are:

y * IBM WebSpherey * BEA WebLogic

y

Oracle's main competitors in the applications businessare:

y * SAP R/3

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y Oracle history y # 1978 - Oracle 1y # 1980 - Oracle 2y # 1982 - Oracle 3y # 1984- Oracle 4 releasedy # 1986 - Oracle 5 releasedy # 1988 - Oracle 6 releasedy # 1992 - Released Oracle 7y # 1997 - Oracle 8 releasedy # 1999 - Oracle 8iy # 2000 - Oracle 8i Release 2 released.y # 2001 - Oracle 9i Release 1y # 2002 - Oracle 9i Release 2y # 2004 - Oracle 10gy # 2007 - Oracle 11g release 1 availabley # 2009 - September Oracle 11g release 2 was available

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What is SQL?y In almost all relational databases, data is accessed

through SQL. SQL allows you toy

SELECTy INSERTy UPDATEy DELETE

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WHAT IS PL/SQL??y PL/SQL is Oracle's procedural language extension to

SQL.

y PL/SQL is for developing database applications.Programs that run inside the database are called storedprocedures.

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D IFFE E CE BETW EE SQLAN D PL/SQL

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Advantages of PL/SQLy PL/SQL is a completely portableadvantages:y Tight Integration with SQLy Better Performancey H igher Productivity y Tight Security y Access to Pre-defined Packagesy Support for Developing Web Applications and pages.

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F inallyy Where does PL/SQL code reside? In the server.

What is the sever from your perspective? A secure andtrusted environment.

What does this make PL/SQL code? It makes it secure andtrusted code.

your PL/SQL resides on and executes inside a secure andtrusted environment(server). This means that unlike clientcode, you can create secure and trusted application codeusing PL/SQL.

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PL/SQL BLOCK STRUCTURE

PL/SQL block has the following structure:

y DECLAREy Declaration statementsy BEGINy

Executable statementsy EXCETIONy Exception-handling statementsy END ;

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What are the keywords that we usually see in pl/sql requirement?y for pl/sql developer and skills required areSkills :

* Excellent Programming, Logical & Problem solvingskills.* Relevant experience in PL/SQL coding.* Ability to develop/maintain applications and write

complex PL/SQL queries.* Should have handson experience in developing Stored

Procedures, Packages, Functions & Triggers.*exp in Performance Tuning ( Query Tuning)

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TH ANK YOU ALL!!!

ANY QUESTIONS??