What is the difference Between Mapping parameter and variable

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What is the difference Between Mapping parameter and variable..

Answer / siva

In additon to the Abhinav answer, Once value assigned to
mapping parameter, it can not be change as per login in
mapping.

Where as if you define as mapping variable, it can be
initialized, can be changed the value as per logic in
mapping and even it can be held as persistent to use the
same value in running session next time.

I think you understand this..

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What is the difference Between Mapping parameter and variable..

Answer / abhinav

Mapping parameter is an option in Informatica where, at the
mapping level, you can specify the value to be used.

For example, if there is a field called START_DATE, the
value for this date can be specified by either passing it
as a variable at the mapping level or storing the value in
a parameter file, which will be read during the session is
run.

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What is the difference Between Mapping parameter and variable..

Answer / sankar

mapping parameter: maping parameter is a constent value
that can be defin before maping run
A mapping parameter reuse the mapping for various constant
value.

mapping variable:mapping vareable is represent a value that
can be change during the mapping run
that can be stored in reposatry the integartion service
retrive that value frm repositary and incremental value for
next run

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