Data Warehouse General Interview Questions
Questions Answers Views Company eMail

What is the difference between aggregate table and materialized view?

586

"A dimension table is wide but the fact table is deep," explain the statement in your own words.

806

Where the data cube technology is used?

541

What are data modeling and data mining?

644

What is surrogate key? Explain with examples.

597

What is junk dimension? What is the difference between junk dimension and degenerated dimension?

584

What is a real-time data warehouse?

578

Can any one explain about core dimension, balanced dimension, and dirty dimension?

625

How do you define data block size?

583

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?

556

What are the possible data marts in retail sales?

528

What is informatica architecture?

592

What is a real-time data warehouse? How is it different from near to real-time data warehouse?

541

explain about balanced dimension,

554

Briefly state different between data ware house & data mart?

547


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Un-Answered Questions { Data Warehouse General }

What is incremintal loading?

566


What are the differences between star and snowflake schema?

486


What are aggregate transformation?

566


Suppose date is 05sep2005; I want the output like 05sep2005:00:00:00 ; how it will come?

547


What is the use of dimensional modeling in data warehousing?

527






Explain how to get the first 100 rows from the flat file into the target?

516


What are algorithms provided by Microsoft in SQL Server?

1564


How to create prompts in report net?

550


Explain what are the methodologies of data warehousing?

524


What is cubes?

610


Is framework manager an un-needed overhead? As we know report studio allows us to create the data model from a query and thereby skipping framework manager. Given that this feature is available, in what scenarios would one want to skip framework manager?

565


What are universe requirements?

528


Explain piconet?

542


Explain what is the difference between datawarehouse and bi?

517


why we use dmr model in cognos report studio ? give me difference between dmr model and relational model.

1531