Is apache nifi an etl tool?
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Identifying the bottlenecks in various components of Informatica and resolving them.
what are the data modeling tools you have used?(polaris)
Define slowly changing dimensions (SCD)?
What is tracing level? How many types of transformations supported by sorted input?
what do u do when DB time takes more?in sap bi
What are dimensions?
Explain and compare etl & manual development?
Difference between flat files and relational sources?
what are the concerns of OLTP and DSS systems?
Assume u have a 24CPU machine with 24GB RAM, suggest how u would like to configure Informatica ,like number of concurrent sessions, RAM requirements etc,max partitions that u would permit per mapping.
Knowledge on what are the improtant characteristice that we need ot consider while developing an ETL Code
how do u really know that paging to disk is happening while u are using a lookup transform?
Teradata 
