Stored routines, that is, stored procedures and functions. A stored function is used much like a built-in function. you invoke it in an expression and it returns a value during expression evaluation. A stored procedure is invoked using the CALL statement. A procedure does not have a return value but can modify its parameters for later inspection by the caller. It can also generate result sets to be returned to the client program.

Triggers. A trigger is a named database object that is associated with a table and that is activated when a particular event occurs for the table, such as an insert or update.

Events. An event is a task that runs according to schedule.

For each object type, there are CREATE, ALTER, and DROP statements that control which objects exist and how they are defined. See Section 12.1, “Data Definition Statements”.

The CALL statement is used to invoke stored procedures. See Section 12.2.1, “CALL Syntax”.

Stored program definitions contain a body that may use compound statements, loops, conditionals, and declared variables. See Section 12.8, “MySQL Compound-Statement Syntax”.