Need to load only delta where I receive full initial file all the time

Hi All,
Can any one let me know is there any feature in DS where we can load only delta/updated/changed fileds from the flat file (which is full load)...
Scenario is : system will send all the time full initial load in a flat file format where DS need to load initially all the records later it has to update only the delta changes... So wondering do I need to perform full load in DS all the time or is there any feature to load initially full file and load only updates moving forward?
Thanks
Rajeev

If you are indeed getting a full dump of the entire target table from the source system, every time, you may find it faster to truncate-and-reload your target table, depending on what else (if anything) goes in there, the number and nature of transformations, etc. Running a really large set of records through a Table Comparison transform, comparing on all fields (which it sounds like you'd need to do), can take a while, and given that you've always got "all the records," may be beside the point.
You also may want to investigate the use of checksum fields. It's possible that adding (and, of course, calculating) checksum fields on each row in both the source and target and then comparing those to identify updates would be faster than doing a Table Comparison transform-based comparison of each field, for each record.
Best wishes,
Jeff Prenevost

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