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Categories >> Software >> Data Warehouse >> ETL
 
 


 

 
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 ETL interview questions  ETL Interview Questions (196)
 Data Warehouse General interview questions  Data Warehouse General Interview Questions (216)
Question
without using ETL tool can u prepare a Data warehousing and
maintaining?
 Question Submitted By :: ETL
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Yes , it is possible to create a datawarehouse without
using ETL tool. but it will be very very complicated and
time consuming and if the needs change you need to re-work
on it again.but when you use etl tools you can adapt you
can make the changes as required.
 
Is This Answer Correct ?    6 Yes 4 No
Bharathikmylearningsphere
 
Answer
# 2
Theoritically speaking Yes. Preparing a Datawarehouse and
maintaining will only be feasible when the amount of Data
you are dealing with is small. Practically Datawarehouses
will have huge data with large number of tables and complex
business rules which may keep changing from time to time.
All this makes practically impossible to implement DWH just
by writing database queries.
 
Is This Answer Correct ?    1 Yes 0 No
Zak
 
 
 
Answer
# 3
Hai..,No Possible. 
Is This Answer Correct ?    2 Yes 6 No
Kiran
 

 
 
 
Other ETL Interview Questions
 
  Question Asked @ Answers
 
What is the main difference between peek stage and copy stage   2
how do u implement scheduling in Informatica? Cognizent 1
What are the new features of informatica 9 version?   2
if u can't find what you are looking for in lookup table, how do you handle?   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
working of line item dimension......pls,tell overall flow   1
how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa. CTS 2
Can we parametrize the values of IN statement. Ex. Inside parameter file: Parameter='A','B','C' Inside Code: IN (INPUT_CHARACTER, $$Parameter) Cognizent 2
Eliminating of duplicate records without using dynamic lookups   3
what is HISTOGRAM? how to generate statistics?   1
can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.   2
how do u estimate the number of partitions that a mapping really requires? Is it dependent on the machine configuration?   1
 
For more ETL Interview Questions Click Here 
 
 
 
 
 


   
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