Stored Procedure In SQL

Stored procedures:- Its nothing but a set of T-SQL statements combined to 

Perform a single task of several tasks. Its basically like a Macro so when you invoke the Stored Procedure, you actually run a set of statements. Stored Procedure are the precompiled set of sql command. Stored procedures means containing a precompiled block of code. if we call stored procedures they need not compiled, only execution takes place. With this advantage, work on database is less.

Triggers: -A set of PLSQL statements automatically executed when DML Statements are performed and stored permanently in database.It is used to impose user defined restrictions or business rules on database table.

Difference between Stored Procedures and Triggers

Stored Procedures are called by the programmer wherever it Wants to fire but triggers fired automatically when insert, delete, and update occurred

Stored procedure normally used for performing tasks But the Trigger normally used for tracing and auditing logs.

Stored procedures should be called explicitly by the user in order to execute
But the Trigger should be called implicitly based on the events defined in the table.

Stored Procedure can run independently. But the Trigger should be part of any DML events on the table.

Stored procedure can be executed from the Trigger. But the Trigger cannot be executed from the Stored procedures.

Stored Procedures can have parameters. But the Trigger cannot have any parameters.

Refer

http://docs.oracle.com/cd/E12151_01/doc.150/e12155/triggers_proc_mysql.htm

Thanks