What is the main difference between star and snowflake star schema? Which one is better and why?
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What is called dimensional modelling?
Which columns go to the fact table and which columns go the dimension table?
What are the types of dimensional modeling?
ware house management system is used?
What is data cleaning? How can we do that?
Describe the differences between a data warehouse and data mart.
What is IQD file?
What is a data warehousing?
Can decision tree be implemented using SQL?
How to load the time dimension?
what are the others of "bad files" and "discard files" when using sql*loader?
What are the different types of segments?