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Question
without using ETL tool can u prepare a Data warehousing and
maintaining?
 Question Submitted By :: Jakki
I also faced this Question!!     Rank Answer Posted By  
 
  Re: without using ETL tool can u prepare a Data warehousing and maintaining?
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
[Keysoft Solutions]
 
  Re: without using ETL tool can u prepare a Data warehousing and maintaining?
Answer
# 2
Hai..,No Possible. 
Is This Answer Correct ?    2 Yes 5 No
Kiran
 
 
 
  Re: without using ETL tool can u prepare a Data warehousing and maintaining?
Answer
# 3
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
 

 
 
 
Other ETL Interview Questions
 
  Question Asked @ Answers
 
what are the facilities provided by OLAP to analytical users?  1
list the transformation used for the following:Heterogeneous sources,Homogeneous sources,Find the 5 highest paid employees with in a dept,create a summery table,generate surrogate keys  2
we hava more than 1000 records. i have to select first 5 record, last 5 record and 5 records from middle of the source. how can i do in oracle as well as in informetica??  4
What is factless fact schema?  3
working of line item dimension......pls,tell overall flow  1
when should one create lookup transformation ?  2
WHY CANT WE SEE THE DATA IN DATASET IBM1
how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.  5
how do u set the size of block buffer?  1
what are Lookup caches options? Including persistent caches.  1
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 iGate2
what is the difference between OLTP database and data warehousing database?  3
 
For more ETL Interview Questions Click Here 
 
 
 
 
 


   
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