Answer / nageswararao.k

procedures and functions are subprograms but triggre is not
a subprogram.
procedure:--once we create a procedure we can use that
procedure from any pl/sql block and any front end
application like java,.net applications.no need to execute
every time.
function:----using function ,we can reuse the code and
passed values though perameteres from calling function to
declared function.

Answer / nageswararao.k

procedure and functions both are subprogrames.but trigger
is not a subprogram
procedure:--a procedure is created to perform one or more
DML operations.if we create procedure,then we can call the
procedure from any frontend application and any pl/sql
block.
procedures may or may not return a value .
we can not call procedure from select statement.
in procedure the out perameter return a value.


function:-the functions are created to do calculatiions and
computations.
function access some input and perform a task and must
return a value.the value return by return statement.
we can call the function from select statement.

Answer / brahma412

i think procedure does not return any values.
but fuction returns value

Answer / harika

we can insert images through procedures

but function may not

Answer / quesanswer

1. Functions must return a value(scalar,inline table or
multi statement table) whereas stored proc may or may not
retun a value.
2.Functions can return a table whereas stored procs can
create a table but can't return table.
3. Stored procs can be called independently using exec
keyword whereas function are called using select statements.
4. Stored procs can be used to change server
configuration(in terms of security-i.e. setting granular
permissions of user rights) whereas function can't be used
for this
5. XML and output parameters can't be passed to functions
whereas it can be with sp's.
6.transaction related statement can be handled in sp whereas
it can't be in function.
7. stored procedures can call a funtion or another sstored
proc similarly a function can call another function and a
stored proc.The catch with function is that no user defined
stored proc can be called.Only extended/system defined procs
can be called.

Answer / s.ramadevi

procedure,function both are subprograms.But procedure dont
return the value,function only return the datatype.

Answer / mk

Function:-
A function is a predefined action which can consumed so that
retrieve the information from table in various scenario .
Procedure :-
procedure are SQl and PL/SQL code compile and stored in the
database.

Difference
Procedure

It may or may Not return a value
It can return multiple value also
It has both Input & output parameter
Doesn’t uses return statement for returning a value
Output Parameter will be specify using Output Clause
This allow select as well as DML operation
It support Transaction mgmt and error-handling using TRY and
Catch Block
They can call another procedure and function for Execution

Function
Function

It Must return a value
It can return only single value
It has both Input parameter
Uses return statement for returning a value
Output Parameter will be specify using Return Clause
This allow select as statement
Doesn’t support Transaction mgmt and error-handling using
TRY and Catch Block
They can call only another function for Execution



When will use :-

We will use procedure to perform complex business Logic as
well as we use function while performing simple
mathematical calculation.

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