Suppose we want to display zero when null values coming to report how can we do that?


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More Data Warehouse General Interview Questions

Explain degenerate dimension table?

0 Answers  


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?

0 Answers  


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

0 Answers  


What is a data warehousing?

0 Answers  


What is ?Data mining??

2 Answers  






Hi,Please can u tell me.. What is the difference between a Hyperion Essbase CUBE and a Star Schema? Thanks in advance, Vijay.

1 Answers   iFlex, Wipro,


What are the mapping paramaters and maping variables?

0 Answers  


Explain what is metadata reporter?

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What are Aggregate tables?

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What is incremintal loading?

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Hi Guys, I have been to L& T last week ..Please find the questions mentioned below 1)Slowly changing dimension types 2)DML statement 3)DDL statement 4)write a syntax to create database 5) differences between count(*) and count(column) 6) differences between union and union all 7) what is decode 8) what is NVL 9) Arrange the values in ascending order 10,5,20,15,null 10)Primary and surrogate key 11)what is group by clause does? 12)what is difference between truncate and delete 13)what is difference between OLAP and OLTP ? 14)Architecture of Datawarehouse 15)how do you test the data validation from source as (flat file and xml) to staging tables. 16)what is shedule and time bound the mentioned above question asked in two rounds.all the best

2 Answers   L&T,


How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.

1 Answers   IBM,


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