Is it good to creating SET table with UPI or NUPI and why..? - response (2) by rajeev saravanan

Hi
Its better to create a SET table with a UPI or enforce uniquness on atleast one of the columns
if not on the PI columns.
SET tables dont allow duplicates however if you are deifining a NUPI then it allows duplicates on PI columns
which means ever time data is loaded its not enough to perform duplicates check on the PI columns alone
it has to perform the check for the entire row set, which is time consuming
Instead if you define another column as Unique then it needs to check only on that column.
 
Regards
R.Rajeev