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What is a mapping, session, worklet, workflow, mapplet?
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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 data modeling?
what happens if the info.server doesn't find the session parameter in the parameter file?
How to Check the source record count from traget table.
What are the types of data warehouse applications and what is the difference between data mining and data warehousing?
What are the etl testing operations includes?
what are Lookup caches options? Including persistent caches.
Which transformation we use to convert 'NA' to 'Not Available'
we have 1 source table containing 100 records. now we have to transfer first set of 1-10 (i.e1-10) records to one target table and another set of 1-10(11-20) records to other target table and continue like that till 100th record
How etl testing is different from database testing?
what is the difference between OLTP database and data warehousing database?
Eliminating of duplicate records without using dynamic lookups
Teradata 
