What is the difference between filter and lookup transformation?
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What is the difference between static cache and dynamic cache?
What is ETL process in Data warehousing?
Is it possible to have more than one row on the same table with the same foreign key?
What are different stages of ?Data mining??
Explain what is the data type of the surrogate key?
Explain is fact table?
what is indexing ? what are different types of indexes supported by oracle ?
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?
What are the different types of data warehouses?
what is difference between scd2 and scd3
OLAP architecture?
Explain when do we analyze the tables? How do we do it?