Data Warehouse General Interview Questions
Questions Answers Views Company eMail

What is source qualifier?

2 8427

Difference between DSS & OLTP?

IBM,

6 48796

Explain grouped cross tab?

2195

Hierarchy of DWH?

Accenture, EDS, IBM, iFlex, TCS,

2 17526

How many repositories can we create in Informatica?

Informatica,

14 24578

What is surrogate key?

IBM, Informatica,

5 20287

What is difference between Mapplet and reusable transformation?

UST,

3 5689

What is aggregate awareness?

2 6609

Explain reference cursor?

1698

What are parallel querys and query hints?

1789

DWH architecture?

6 16183

What are cursors?

4 7386

Advantages of de normalized data?

2 10249

What is operational data source (ODS)?

2 9320

What is meta data and system catalog?

1855


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Un-Answered Questions { Data Warehouse General }

Explain the data type of the surrogate key?

571


Which technology should be used for interactive data querying across multiple dimensions for a decision making for a dw?

590


What is a cube in data warehousing concept?

662


What is called dimensional modelling?

580


Explain the difference between data ware house & data mart?

551






What is execution plan?

749


How to allow a dynamic selection of a column for a measure in a chart,without using variable?

512


Explain what is what are semi-additive and factless facts and in which scenario will you use such kinds of fact tables?

517


How can we run the graph? What is the procedure for that? How can we schedule the graph in unix?

560


Is there any rownum object from which we can do this?

522


Explain the difference between oltp and olap?

686


I know of using applysimple, but there are other ways too?

563


Suppose you are filtering the rows using a filter transformation only the rows meet the condition pass to the target. Tell me where the rows will go that does not meetthe condition.

644


What is data warehosuing hierarchy?

581


Start a batches with in a batch?

555