Data Warehouse General Interview Questions
Questions Answers Views Company eMail

What is source qualifier?

2 8928

Difference between DSS & OLTP?

IBM,

6 49756

Explain grouped cross tab?

2310

Hierarchy of DWH?

Accenture, EDS, IBM, iFlex, TCS,

2 17894

How many repositories can we create in Informatica?

Informatica,

14 25780

What is surrogate key?

IBM, Informatica,

5 20789

What is difference between Mapplet and reusable transformation?

UST,

3 6092

What is aggregate awareness?

2 6915

Explain reference cursor?

1820

What are parallel querys and query hints?

1898

DWH architecture?

6 16926

What are cursors?

4 7809

Advantages of de normalized data?

2 10508

What is operational data source (ODS)?

2 9624

What is meta data and system catalog?

1971


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Un-Answered Questions { Data Warehouse General }

Explain degenerate dimension table?

669


What are loops in Datawarehousing?

661


What is freehand sql?

741


What is cubes?

744


Is there any default username & pwd for bo designer & supervisor?

699






Explain what is data validation strategies for data mart validation after loading process?

720


What are the difference between snow flake and star schema? What are situations where snow flake schema is better than star schema to use and when the oppositeis true?

746


What is the use of tabular model, tabular sql, tabular reference in real time application?

656


How to pivot row data using informatica?

629


What are the different types of join operations?

678


Explain functional dependency?

726


What is Discrete and Continuous data in Data mining world?

2243


What is the use of dimensional modeling in data warehousing?

663


Do you view contain data?

673


What are the methodologies of data warehousing?

688