Cognos and Informatica are not same tool that does the same work.
Informatica is a ETL tool. It extracts data from various sources (Oracle, db2, Sybase, etc) transforms it and loads data into the warehouse.
Cognos is a reporting tool. It is used for business purpose to generate some reports (may be pictorial or statistical representation). It uses the datawarehouse information to generate a report.
Oracle business intelligence is another reporting tool which is becoming famous today.
Informatica is a ETL tool. It extracts data from various sources (Oracle, db2, Sybase, etc) transforms it and loads data into the warehouse.
Cognos is a reporting tool. It is used for business purpose to generate some reports (may be pictorial or statistical representation). It uses the datawarehouse information to generate a report.
Oracle business intelligence is another reporting tool which is becoming famous today.
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