explain about dirty dimension?
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what are relationships?
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What are session timeout and application timeout?
Explain vldb?
Where do we use semi and non additive facts?
What is operational data source (ODS)?
I HAVE A FLAT FILE DO THE NULL CHEK AND PRIMARI KEY CHEK AND DATE VALIDITAION LOAD TO TARGET TABLE
What are the steps involved in creating dimensional modeling process?
What is called dimensional modelling?
What is Star Schema?
What is data warehosuing hierarchy?
What is the difference between snowflake and star schema? What are situations where snowflake schema is better than star schema when the opposite is true?
Define Data Warehousing?