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how do u estimate the number of partitions that a mapping
really requires? Is it dependent on the machine configuration?
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How can write SQL Overwrite to get Daynamic rows from the source in SQ transformation!(Any Example)
How many steps etl contains explain with example?
1.Identify and discuss the problems which are occurred during data quality verification for the single-source and multi-source problems. 2.Testing has very important role in DWH. In ETL testing phase, how can we perform the integration testing and regression testing? 3.What are the perquisites of system testing and regression testing in ETL phase?
Which transformation we use to convert 'NA' to 'Not Available'
how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.
What is a mapping, session, worklet, workflow, mapplet?
dimension object created in oracle can be imported in designer?how?
if u can't find what you are looking for in lookup table, how do you handle?
When you have 2 servers in two different time zone and if you need to extract data from 1 server and load it in another server, how do you go about it? Best method to be used.
what is the difference between OLTP database and data warehousing database?
Explain what are the various etl tools in the market?
What are the three tiers in etl?
Teradata 
