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Transcript 
MATERI
Procedures
Functions
Packages
Database Triggers
PL/SQL
Oracle Developer
PL/SQL
Introduction
About PL/SQL
• PL/SQL is the procedural extension to
SQL with design features of programming
langguages
• DML and query statements of SQL are
included within procedural units of code
PL/SQL Environment
PL/SQL engine
PL/SQL
PL/SQL
Block
PL/SQL
Block
SQL
SQL statement executor
Oracle Server
Procedural
Statement
Executor
Benefits of PL/SQL
Integration
Application
Shared library
Oracle Server
Benefits of PL/SQL
Improved Performance
SQL
Application
SQL
SQL
Other DBMSs
SQL
Application
SQL
IF...THEN
SQL
ELSE
SQL
END IF;
SQL
Oracle with
PL/SQL
Benefits of PL/SQL
Modularize program development
DECLARE
BEGIN
EXCEPTION
END;
Benefits of PL/SQL
• It is portable.
• You can declare identifiers.
• You can program with procedural language
control structures.
• It can handle errors.
Benefits of Subprograms
•
•
•
•
Easy maintenance
Improved data security and integrity
Improved Performance
Improved code clarity
Invoking Subprograms
LOG_EXECUTION
procedure
Developer
Portal
Discoverer
Another
Proc. or
Functions
iSQL*Plus
PROCEDURE
leave_emp
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