PL/SQL Procedures In Oracle

There are two types of PL/SQL blocks: named block and an anonymous block.
There are two types of named blocks: Functions and Procedures

A stored procedure is a PL/SQL block that accepts zero or more parameters as input (IN), output (OUT), or both (INOUT). PL/SQL Procedures do not return a value; instead the INOUT parameter or OUT parameter may be used to pass a value from the procedure. Procedures cannot be used in SQL statements; they are invoked using the EXECUTE command or called inside a PL/SQL block.

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