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What is the difference between a primary and secondary actor in use case modeling?


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More Data Warehouse General Interview Questions

What are cursors?

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what is difference between scd2 and scd3

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How to limit the max no of rows retrieved in the report?

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

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Explain what are the steps to build the data warehouse?

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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

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Can we have more than one time dimensions in a Schema(Star or Snowflake)

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