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ETL Interview Questions
Questions Answers Views Company eMail

what are the facilities provided by data warehouse to analytical users?

2081

what are the facilities provided by OLAP to analytical users?

1 4723

what is HISTOGRAM? how to generate statistics?

1 5014

how do u set the size of block buffer?

1 4410

how do u implement unconn.stored proc. in a mapping?

1 4913

if u can't find what you are looking for in lookup table, how do you handle?

1 5246

How can write SQL Overwrite to get Daynamic rows from the source in SQ transformation!(Any Example)

1 6168

Which type or t/s is used to convert rows into column & column into rows

Infosys,

9 29723

In the SEQ generator which property has to be set to generate seq No. when the input data is more than the max limit.

Accenture,

3 9147

Where can i get informatica certification Exam dumps and details? please forward it to emailid: krisboppana@yahoo.com

Accenture, College School Exams Tests, CTS, Flextronics, HCL, Infosys, NexGen, Patni, SO, Wipro,

320 283790

Dear All, Can anyone tell me that from where i can get Power Center 8.5 S/W for Linux and how can i install Power Center 8.5 or any 7.x series on Linux Platform. Thanks in advance

2236

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 7212

Is there any body who works on Pervasive Data Integrator (previously Data Junction)? Is there any scope also?

2 6947

architural difference between 7.1 workflow monitor and 8.1 workflow monitor.

IBM, Infosys,

1 3769

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

2536


Post New ETL Questions

Un-Answered Questions { ETL }

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

2536


Can anyone explain me a scenario from banking and finance...more precisely a mapping

2495


How can you use an Oracle sequences in Informatica ? You have an Informatica sequence generator transformation also. which one is better to use?

2271


how do u estimate the number of partitions that a mapping really requires? Is it dependent on the machine configuration?

2263


What are the names of the layers in etl?

1001


5. How many repositories can we create in Informatica? 6. What is surrogate key? 7. What is difference between Mapplet and reusable transformation? 8. What is aggregate awareness? 9. Explain reference cursor? 10. What are parallel querys and query hints? 11. DWH architecture? 12. What are cursors? 13. Advantages of de normalized data? 14. What is operational data source (ODS)? 15. What is meta data and system catalog? 16. What is factless fact schema? 17. What is confirmed dimension? 18. What is the capacity of power cube? 19. Difference between PowerPlay transformer and power play reports? 20. What is IQD file? 21. What is Cognos script editor? 22. What is difference macros and prompts? 23. What is power play plug in? 24. Which kind of index is preferred in DWH? 25. What is hash partition? 26. What is DTM session? 27. How can you define a transformation? What are different types of transformations in Informatica? 28. What is mapplet? 29. What is query panel? 30. What is a look up function? What is default transformation for the look up function? 31. What is difference between a connected look up and unconnected look up? 32. What is staging area? 33. What is data merging, data cleansing and sampling? 34. What is up date strategy and what are th options for update strategy? 35. OLAP architecture? 36. What is subject area? 37. Why do we use DSS database for OLAP tools?

2716


How can we use external procedural logic in informatica?

924


how to connect to a flatfile through ftp in informatica

14299


What is a materialized view log?

998


What are the types of Data Warehouse applications?

1025


What is tracing level? How many types of transformations supported by sorted input?

973


SCD2 will work on only dimension tables as well as fact Table?

1401


Explain the difference between etl tool and olap tools?

908


Knowledge on what are the improtant characteristice that we need ot consider while developing an ETL Code

1993


how to load the data to fact table?

2703