Briefly state different between data ware house & data mart?
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What is Star Schema?
What are the methodologies of data warehousing?
I HAVE A FLAT FILE DO THE NULL CHEK AND PRIMARI KEY CHEK AND DATE VALIDITAION LOAD TO TARGET TABLE
What is surrogate key? Where we use it explain with example?
What are situations where snow flake schema is better than star schema to use and when the opposite is true?
For faster process, what we will do with the universe?
What are the types of dimensional modeling?
OLAP architecture?
How to calculate fact table granularity?
Explain which are the olap tools available that are supported by oracle?
Tell me what is full load & incremental or refresh load?
Explain can a dimension table contains numeric values?