how do u identify the changed records in operational data?
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where we cannot use sorter Transformation. if we use then we will not get correct data?
how do u set the size of block buffer?
What is a mapping, session, worklet, workflow, mapplet?
Explain about etl data integration software?
A mapping contains source table S_Time(stat_year,end_year) target table TIM_DIM(date,day,month,year,quarter) stored procedure transformation: A procedure has two parameters I_end_year and output parameter as O_date ,day , month, year, quarter, If this session is running, how many rows will be available in the target and why?
what is HISTOGRAM? how to generate statistics?
What are the different Lookup methods used in Informatica?
what happens if the info.server doesn't find the session parameter in the parameter file?
When do we analyze the tables?
How to delete data which is not in source table?
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can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.
What is partitioning? Explain about round-robin, hash partitioning.
Teradata 
