ETL Interview Questions
Questions Answers Views Company eMail

How many types of transformations supported by sorted input?

683

How to fine tune mappings?

562

What is a mapping, session, worklet, workflow, mapplet?

500

What is etl process?

529

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

534

Explain what are the various etl tools in the market?

510

Suppose I am loaded with questions as I am an experienced etl coder, but not an analytical report builder. I am using analysis services to build a cube but am trying to choose the reporting architecture. Can someone please confirm whether or not reporting services (using the business intelligence report) will allow for slicing and dicing, or is it only a static report builder. Also, if I am using the cube browser in analysis services, where can I put the option of non empty so that I dont see records that are blank.?

496

Explain do we need an etl tool? When do we go for the tools in the market?

608

Explain do we need an etl tool?

518

When do we go for the tools in the market?

541

Explain what is etl process? How many steps etl contains explain with example?

498

How many steps etl contains explain with example?

471

Explain and compare etl & manual development?

518

Explain the difference between etl tool and olap tools?

530

What are various etl tools in the market?

515


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Un-Answered Questions { ETL }

1)Power center server and client on the same machine 2)power center server and client on the different machines What is the basic difference in these two setups and which is recommended ?

1664


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

2020


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?

2315


What is tracing level and what are the types?

529


Hi, I completed MCA in 2006.After studied Informatica,SQL server and basics of reporting tool in one of the training center in chennai.I got subject knowledge only.But I didn't go any job because I scared to face real time.Anyone please advice how can I enter again into this and anyone provide real time exposure with project.

1386






how do u set partition points in the mapping?

1792


Explain about power designer data modeling software?

457


can u please tell me about ........ how can explain my project before interviewer my projects are insurence domain & sales domain?

1725


What is etl process. How many steps etl contains explain with example?

509


hoe to access second value in mapping parameter if it is having more than one value ?????????????

1124


How to delete data which is not in source table?

826


When do we analyze the tables?

534


what are the concerns of OLTP and DSS systems?

1553


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

1645


What is meant by incremental load?

589