What are snapshots? What are materialized views & where do we use them? What is a materialized view log?
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how would u estimate the size of Aggregator transform data and index cache?
where are the log files generally stored.Can you change the path of the file.what can the path be?
What are the names of the layers in etl?
Knowledge on what are the improtant characteristice that we need ot consider while developing an ETL Code
What is a mapping?
architural difference between 7.1 workflow monitor and 8.1 workflow monitor.
Difference between flat files and relational sources?
explain about your project architecture in ssis..could u please send to my mail..vinod.kjvk@gmail.com
how would u estimate the size of Lookup transform data and index cache?
flat filevalidation in informatica
you have created a lookup transformation for a certain condition which if true returns multiple rows. when you go to the target and see only one row has come and not all. why is it so and how it can be corrected.
What are the key benefits of ETL Testing?
Teradata 
