Data Warehouse Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Teradata (490)
Business Objects (875)
Cognos (1143)
Informatica (2428)

SAS (1049)
Micro Strategy (282)
ETL (315)
OBIEE (92)

Data Warehouse Interview Questions

Questions Answers Views Company eMail

can BO generate reports with out CUBICAL data to repository?

4 12747

what is main functional differences between BO and COGNOs?

TCS,

5 17193

hi Here ive question on Reportnet when we save a report in reportstudio with what ext it save

iGate,

6 17279

SAS System ?

5 12814

sas macros

TCS,

12 28787

how to test reports in businessobjects?

TCS,

8 54206

What is source qualifier?

2 10273

Difference between DSS & OLTP?

IBM,

6 51780

Explain grouped cross tab?

2626

Hierarchy of DWH?

Accenture, EDS, IBM, iFlex, TCS,

2 19171

How many repositories can we create in Informatica?

Informatica,

14 29014

What is surrogate key?

IBM, Informatica,

5 22618

What is difference between Mapplet and reusable transformation?

UST,

3 7574

What is aggregate awareness?

2 8033

Explain reference cursor?

2167

Un-Answered Questions { Data Warehouse }

What is ds designer?

1103

how sas deals with business intelligence? : Sas-bi

1056

Explain the methods to improve performance of a graph?

1110

What is amazon redshift odbc?

What are cluster in redshift?

what is granularity in Data ware House?

1723

Explain substr function?

1110

How do you setup Lo-cockpit?

3164

what is power prompt in cognos ep7series?what is the use of this?

3689

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

Define query studio?

1002

How can we use external procedural logic in informatica?

924

What is clusterservices in obiee ? Why its used?

923

What are the functions of the replicate and dedup component?

1092

how can I test reports in cagnos?

1153

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