Functions Procedures
* Invoke as a part of an expression. Execute as a PL/SQL statement.
* Must contain a RETURN clause in the header. Do not contain a RETURN
Clause in the header.
* Must return a single value. Can return none, one or many
values.
* Must contain at fast one RETURN Can contain a RETURN
Statement. Statement.
* Do not contain OUT and INOUT Can contain IN, Out and
IN OUT parameters. IN OUT Parameters.
* Invoke as a part of an expression. Execute as a PL/SQL statement.
* Must contain a RETURN clause in the header. Do not contain a RETURN
Clause in the header.
* Must return a single value. Can return none, one or many
values.
* Must contain at fast one RETURN Can contain a RETURN
Statement. Statement.
* Do not contain OUT and INOUT Can contain IN, Out and
IN OUT parameters. IN OUT Parameters.
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