What are the different types of datawarehosuing?
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What is called data cleaning?
for data loading in oracle, what are conventional loading , what are conventional loading and direct-path loading?
What is a Decision Tree Algorithm?
Explain functional dependency?
What is a star schema? Why does one design this way?
Explain what are the basic needs to join two sources in a source qualifier?
Explain can a dimension table contains numeric values?
How to add a number to a macro variable?
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
What are the steps involved in designing a fact table?
What is edw?
What is cubes?