PL/SQL


PL/SQL

PL/SQL (Procedural Language/Structured Query Language) is an extension of SQL developed by Oracle Corporation. It combines the data manipulation power of SQL with procedural programming features such as loops, conditions, and exception handling.

PL/SQL is mainly used in Oracle Database to write programs that can perform complex database operations efficiently.

🔹 Features of PL/SQL

  • Supports variables, constants, and data types

  • Uses control structures like IF, LOOP, WHILE

  • Allows exception handling

  • Supports procedures, functions, triggers, and packages

  • Improves performance by executing multiple SQL statements in a single block

🔹 Structure of PL/SQL Block

A PL/SQL program is written in blocks:

  • Declaration Section – Declare variables

  • Execution Section – Write SQL and procedural statements

  • Exception Section – Handle errors (optional)

PL/SQL helps in building secure, efficient, and structured database applications by combining SQL with programming logic.


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