Why null values are mapped as 0 in fact tables?


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More Data Warehouse General Interview Questions

What is load manager?

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a perceptron has two inputs x1,x2 wih weights w1,w2and bias weight of w0. the activation function of perceptron is h(x).the output of perceptron

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Hyperion is the one of the tool in data ware house. Its an olap tool. Why you cant display that tool?

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What is the difference between power center & power mart?

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what is user variable in affinium campaign? and some real time examples.

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what are confirmed dimension? We alwys give date as a conformed dimension but if it has different format for different contries say YYMMDD for italy and MM-DD-YYYY for france.Then are they not confirmed.

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What are the data types present in bo?

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What is the difference between er modeling and dimensional modeling?

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What is difference between model & package?

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After we create a scd table, can we use that particular dimension as a dimension table for star schema?

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What are diagrams?

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What is the difference between olap and datawarehosue?

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