How are the dimension tables designed?
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What is a Decision Tree Algorithm?
Explain what are snapshots? What are materialized views & where do we use them? What is a materialized view log?
What needs to be done while starting the database?
What are the different types of schemas used in data warehousing?
What is IQD file?
What is the difference between filter and lookup transformation?
Explain why denormalization is promoted in universe designing?
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 to join 3 database like flat file, oracle, db2 in informatrica?
What are the key features of chameleon that separates it from other algorithms?
2.What is staging area ?
4 Answers HCL, IBM, iFlex, TCS,
What are the different types of scd's used in data warehousing?