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Categories >> Software >> Data Warehouse >> ETL


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without using ETL tool can u prepare a Data warehousing and
 Question Submitted By :: ETL
I also faced this Question!!     Answer Posted By  
# 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
# 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
# 3
Hai..,No Possible. 
Is This Answer Correct ?    2 Yes 6 No

Other ETL Interview Questions
  Question Asked @ Answers
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
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 automate Extraction process?   1
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
how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.   5
what are the different Reporting and ETL tools available in the market?   3
Eliminating of duplicate records without using dynamic lookups   3
Is there any body who works on Pervasive Data Integrator (previously Data Junction)? Is there any scope also?   2
Where can i get informatica certification Exam dumps and details? please forward it to emailid: NexGen 310
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 is Relational Integrity?   1
How to load Session Statistics (Workflow name, TgtRows, Rejected Rows, SessStartTime,SessEndTime..)into a database table ?? Another Question: I want to pass values from oracle table or Flat file in Mapping parameter/Variable.. What is the method for that..Please provide me the solution step by step   1
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