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Explain how to export mappings to the production environment?
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What is surrogate key? Where we use it?
Explain why dimenstion tables are denormalized in nature?
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.
4 Answers IBM, MAHINDRA, Tech Mahindra,
Tell me the Top 10 features of oracle that supports datawarehousing.
Code the tables statement for a single-level (most common) frequency?
State any 5 of Cods guidelines of an OLAP system, brief description each?
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What is type 2 version dimension?
What are the possible data marts in retail sales?
2.What is staging area ?
4 Answers HCL, IBM, iFlex, TCS,
Teradata 
