know abt diffrence between Business Intellegence and Datawerehouse.. and also what is informatica,cognos,six sigma,

Business intelligence (BI) refers to computer-based techniques used in spotting, digging-out, and analyzing business data, such as sales revenue by products and/or departments or associated costs and incomes. Often BI applications use data gathered from a data warehouse or a data mart. However, not

no diffrence between Business Intellegence and Datawerehouse.both r same..informatica,cognos is a Datawerehouse tools Cognos from IBM and Informatica frm Informatica Inc.