1. A method for searching databases, the method comprising: accessing historical incident data from a plurality of databases having different coding representing categories; recoding the different coding to provide a standardized coding of the historical incident data; outputting unified historical incident data from the plurality of databases using the standardized coding to create standardized categories; prompting for product information to be used as parameters for a query; prompting for data sources to be used in the query; prompting for query input, wherein the query input includes at least one of an age range, a year range, a keyword and a product code; submitting the query using the query input to access the standardized historical incident data to produce a query result; and checking whether the query result is sufficient, and if deemed sufficient, signifying an occurrence level and a severity level of incidents for records found during the query, otherwise, filtering the results and resubmitting another query.