Insurance Project Simple Explanation

can anyone explain me about sales project in informatica?

im explained earliarly as follows,

im working under insurence domain project, usually i extract the data from defferent sources like flat files, oracle, db2.

first we load the extracted data into intermidiate staging area, where we are having 150 tables, and again we extract data from intermediate staging area and we load into an other staging area where we are having event and value base tables

we transfom the data into staging according to the business requirement , to transform the data i used trasformations like expression, lookup,update strategy,joiner wtc