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Explain what type of indexing mechanism do we need to use for a typical datawarehouse?
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What are the steps involved in creating dimensional modeling process?
Explain functional dependency?
What is the difference between star and snowflake schemas?
What is execution plan?
Explain what are conformed dimensions?
Explain what are the vaious etl tools in the market?
what are relationships?
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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 meet the condition 333 after we create a scd table, can we use that particular dimension as a dimension table for star schema?
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
Explain difference between e-r modeling and dimentional modeling?
Hi, If any hav Informatica n DWH FAQ's,Plz do fwd to s.rajanikanth1980@gmail.com Thnx Vani
Give some difference between oltp and olap.
Teradata 
