What are the types of data warehouse applications and what is the difference between data mining and data warehousing?
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list the transformation used for the following:Heterogeneous sources,Homogeneous sources,Find the 5 highest paid employees with in a dept,create a summery table,generate surrogate keys
what do u do when DB time takes more?in sap bi
two sources S1,S2 containing measures M1,M2,M3, 4 dimensions D1,D2,D3,D4, 1 Fact F1 containing measures M1,M2,M3 and surrogate keys K1,K2,K3,K4 (a) write a sql statement to populate Fact table F1 (b) Design a mapping in Informatica for loading of fact table F1.
what are the concerns of OLTP and DSS systems?
What is Data Vault???
what is the difference between cardinality and Nullability?
Explain about round-robi?
what is the difference steps for data modeling?
what is architecture of your datastage project??? i came across this question many times in interviews in specific what can i answer plz help me.
How etl testing is different from database testing?
where are the log files generally stored.Can you change the path of the file.what can the path be?
what is the difference between cubes and package in cognos