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Why should we use data ware housing and how can you extract data for analysis with example?
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What is the definition of cube in datawarehousing?
What is the difference between a W/H and an OLTP application?
Tell me the Top 10 features of oracle that supports datawarehousing.
What is type 2 version dimension?
Explain what is the limit to the number of sources and targets you can have in a mapping?
What are the difference between snow flake and star schema? What are situations where snow flake schema is better than star schema to use and when the oppositeis true?
how much memory space occupied real time project (roughly)?
Explain dimension table ?
how to find unique records in informatica level
Explain differences between star and snowflake schemas?
What are partition points?
How to import vsam files from source to target. Do we need a special plugin?
Teradata 
