DataStage - Change capture

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Change capture

What is the difference between change capture and change apply stages

Total Answers and Comments: 2

Last Update: July 06, 2008 Asked by: Suri123

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Submitted by: ritu singhai

Change capture stage is used to get the difference between two sources i.e. after dataset and before dataset. The source which is used as a reference to capture the changes is called after dataset. The source in which we are looking for the change is called before dataset. This change capture will add one field called "chage code" in the output from this stage. By this change code one can recognize which kind of change this is like whether it is delete, insert or update.
Change apply stage is used along with change capture stage. It takes change code from the change capture stage and apply all the changes in the before dataset based on the change code.
Hope this helps.

Regards,
Ritu Singhai.

Above answer was rated as good by the following members:
Brajesh Singh Bhadoriya

May 29, 2008 12:26:59

HemaDS

Member Since: May 2008 Contribution: 2

RE: Change capture

Change Capture is used to capture the changes between the two sources.

Change Apply will apply those changes in the output file.

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July 06, 2008 23:56:07

ritu singhai

Member Since: July 2008 Contribution: 0

RE: Change capture

Change capture stage is used to get the difference between two sources i.e. after dataset and before dataset. The source which is used as a reference to capture the changes is called after dataset. The source in which we are looking for the change is called before dataset. This change capture will add one field called "chage code" in the output from this stage. By this change code one can recognize which kind of change this is like whether it is delete, insert or update.
Change apply stage is used along with change capture stage. It takes change code from the change capture stage and apply all the changes in the before dataset based on the change code.
Hope this helps.

Regards,
Ritu Singhai.

Is this answer useful? Yes | No

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