Difference between PowerPlay transformer and power play reports?

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More Data Warehouse General Interview Questions

Explain what is a three tier data warehouse?

Do you always need to copy the data before reporting on it?(Example, real-time & on-demand reporting is a requirement)?

Explain how does tuple-oriented relational calculus differ from domain-oriented relational calculus?

what is the diffrence between psa and idoc

what is data validation strategies for data mart validation after loading process

What is crass reference table?

What is data merging, data cleansing and sampling?

Can we take backup when the database is opened?

Which technology should be used for interactive data querying across multiple dimensions for a decision making for a dw?

What is the main difference between schema in rdbms and schemas in datawarehouse?

what are different ways of loading data to data warehouse using oracle?

Explain the definition of normalized and denormalized view?

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