Which transformation we use to convert 'NA' to 'Not Available'
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What are three tier systems in etl?
what is the indicator file and where it is used?
Identifying the bottlenecks in various components of Informatica and resolving them.
what is the use of structures?how many nodes can u create in a structure?
1.Identify and discuss the problems which are occurred during data quality verification for the single-source and multi-source problems. 2.Testing has very important role in DWH. In ETL testing phase, how can we perform the integration testing and regression testing? 3.What are the perquisites of system testing and regression testing in ETL phase?
Identifying the bottlenecks in various components of Informatica and resolving them.
what are the facilities provided by OLAP to analytical users?
What is a staging area? What is the purpose of a staging area?
What are dimensions?
what are variable ports and list two situations when they can be used?
what is data modeling?
How to fine tune mappings?