Describe data warehouse
Describe briefly the term data warehouse?
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A data warehouse is systemized around specific subjects. The data is defined employing consistent naming, encoding structure standards, and format. The data consists of a time element, in order that the data can be studied for trends. No data can be updated by end users in a data warehouse.
Explain the term Chasm trap?
Elucidate briefly the term metadata reporter?
Illustrate the multi value or multicolumn problem? Include an example not employed in the text.
How can we increase the performance within the Data Stage?
Elucidate briefly what is batch and also give explanation about the types of batches?
What does it mean when we say that a relation is in Boyce-Codd Normal Form (BCNF)?
Specify the tasks of universe designer?
What is meant by the User Objects? Specify some of its restrictions?
What do you mean by optimization and performance tuning and explain how does it actually work in the practical projects?
Illustrate why informational and operational systems are separate?
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