list and discuss two approaches for updation of target table
in Informatica and how they are different.
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What is etl tool in hadoop?
What is etl process. How many steps etl contains explain with example?
how can i text accracy of ETL migration? i am very new to data warehousing. we are writing ETL scripts using SCRIPELLA tool. how can i test the correctness of data. and we are generating reports using pentaho . is there any easy way to test the pentaho. how can test these ETL scripts written in scriptella? thanks in advance
what are the production issues in datastage?
what are the different forms of normalization?
Eliminating of duplicate records without using dynamic lookups
tell me few points when u become TL
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Give a way in which u can implement a real time scenario where data in a table is changing and u need to look up data from it.How will u configure the look up transform for this purpose?
1. if lookup tr is giving poor performamence. what u do. 2. i have emp,dept table. i want output ename,empno,dname,max(sal). 3. can any one tell me project flow in real time scenario. please send me mail any queries and answers my mail id is yaparala@gmail.com
what is the indicator file and where it is used?
how do u estimate the number of partitions that a mapping really requires? Is it dependent on the machine configuration?
Teradata 
