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ETL Interview Questions
Questions Answers Views Company eMail

please tell me any easy ways of testing the Data warehouse project. In my project we are not using any tools for ETL. we are writing scripts in SCRIPTELLA. And we using Pentaho tool for Reporting How can i test all these. please tell me ASAP. thanks in adavance

2483

what types of repositories we can create in informatica? in real time in which type of repository we will work on?

2 7984

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

we have 1 source table containing 100 records. now we have to transfer first set of 1-10 (i.e1-10) records to one target table and another set of 1-10(11-20) records to other target table and continue like that till 100th record

3 8900

CAN ANY ONE SEND ME THE CODE FOR THE BELOW 1).REMOVE '_' FROM TELE PHONE "323-237-2323" AND SHOULD DISPLAY OUT PUT AS "323237232" 2). NEED TO ONLY "COMPANY.COM" FROM EMAIL FILED "TEST@COMPANY.COM"

11 16976

How to know informatica conslole password??

2115

Can anyone please send me the latest informatica dumps (power center 8.1.1) for all the three exams? My mail id is yokilamai@gmail.com

1 4494

HI, Anybody is having informatica Dumps,if it there Can u send to my mail id :sathesh.cool@gmail.com

2041

1.Identify and discuss the problems which are occurred during data quality verification for the single-source and multi-source problems. 2.Testing has very important role in DWH. In ETL testing phase, how can we perform the integration testing and regression testing? 3.What are the perquisites of system testing and regression testing in ETL phase?

2241

what are the production issues in datastage?

10420

what are the cubes developed in a sap bw project and what is the requirement for developing it?

Maersk,

2077

what are the reports developed in sap bw project and what is the requirement for developing it?

Maersk,

2178

what are the reports created in mm and sd side using sap bw in a project? name some of them and explain the requirement?

Accenture,

2124

what are the data sources extracted from logistics cockpit in sap bw project and what is the requirement for it ?

Accenture,

2627

in sap bw project at what scenario generic extraction is used and why explain and also tell why you used calendar day option explain?

Accenture,

2 10879


Post New ETL Questions

Un-Answered Questions { ETL }

What is data modeling and data mining?

974


when will use SQL override in a lookup transformation?

2292


Define slowly changing dimensions (SCD)?

1060


What is etl tool in hadoop?

894


Which transformation we use to convert 'NA' to 'Not Available'

1268


what are the concerns of OLTP and DSS systems?

1962


where are the log files generally stored.Can you change the path of the file.what can the path be?

2440


what happens if the info.server doesn't find the session parameter in the parameter file?

1945


how would u estimate the size of Lookup transform data and index cache?

2128


what is pmrep command?

11579


What is partitioning? Explain about round-robin, hash partitioning.

964


what is Forward,Reverse and Re_engineering?

2250


Difference between flat files and relational sources?

2241


Explain etl?

981


How to increase performance without changing anything in mapping.( In prod)

1264