Can any one explain the hierarchies level data warehousing.
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If your client approaches you and says that he wants to create a Datawarehouse, and provides just the info regarding his source systems. What are all the neccessary actions one is supposed to take/understand and get back with a comprehensive document which convinces the client to proceed with the DW initiative. What are all the documents we need to provide the client?
How are models actually derived?
State any 5 of Cods guidelines of an OLAP system, brief description each?
What are the reasons to use a chameleon method in data warehousing?
Why denormalization is promoted in universe designing?
what is indexing ? what are different types of indexes supported by oracle ?
What is a source qualifier?
What is perform recovery?
After we create a scd table, can we use that particular dimension as a dimension table for star schema?
How can you define a transformation? What are different types of transformations in Informatica?
What is a real-time data warehouse?
Difference between ODS and Staging