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Categories >> Software >> Data Warehouse >> ETL
 
 


 

 
 Teradata interview questions  Teradata Interview Questions (183)
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 Informatica interview questions  Informatica Interview Questions (1622)
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 ETL interview questions  ETL Interview Questions (195)
 Data Warehouse General interview questions  Data Warehouse General Interview Questions (215)
Question
what is the advantage of persistent cache? when it should be
used?
 Question Submitted By :: ETL
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
when the table you are using for lookup is static table(
i.e. data is not changing ) and it is the huge table.
Hence reduce the session time by using the persistent cache
file/s.
Regards,
 
Is This Answer Correct ?    1 Yes 0 No
San
 

 
 
 
Other ETL Interview Questions
 
  Question Asked @ Answers
 
what is meant by drill through?(Mascot)   1
what are business components in Informatica?   1
Hello all, Source Table(Flat File):- Target Table(Flat File):- Date Date 01/08/2008(DD/MM/YYYY) 01/08/2008 02/08/2008 03/08/2008 04/08/2008 05/05/2008 My requiremnt is this. I need to do it by informatica,Plz tell me how can i do it? Thanks   3
I have a Flat file with more no. of Records also including duplicate values. But i need distinct values to one target and remaining records to another target in Informatica way   2
What is Relational Integrity?   1
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
Hi, Lookup() is what kind of join ? Satyam 5
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 iGate 2
indatastage 8.1 surrgoate key generates seqences numbers write but there is limite value i want to reset the seqence after gettting some highest value like i want o/p like this 1 2 3 4 5 .............10000 1 2 3.........10000 TCS 1
we hava a flat file having more than 1000 records and two targets. i have to write first half of the rows into first targets and next half of rows into second target. how can i do in informetica??   1
what are the different Reporting and ETL tools available in the market?   1
Where can i get informatica certification Exam dumps and details? please forward it to emailid: krisboppana@yahoo.com NexGen 310
 
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