What are non-additive facts in detail?
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Explain what are the vaious etl tools in the market?
How many repositories can we create in Informatica?
2.What is staging area ?
4 Answers HCL, IBM, iFlex, TCS,
How to eliminate duplicate rows from flat file?
Define data warehouse?
Why is dimensional normalization not required?
How can we run the graph? What is the procedure for that? How can we schedule the graph in unix?
Explain what are fact, dimension, and measure?
Explain about core dimension, balanced dimension, and dirty dimension?
What is a data warehousing?
What is called dimensional modelling?
Explain the difference between data ware house & data mart?