4. A method according to claim 3 wherein constructing the concept comprises: automatically constructing the concept associated with the respective search term incorporating at least some of the terms related to the respective search term based upon the string matching; and permitting modification of the automatically constructed concept prior to conducting the search of the one or more data sources.
3. A method according to claim 1 wherein constructing the concept comprises identifying a plurality of terms related to the respective search term based upon the string matching and constructing the concept associated with the respective search term incorporating at least some of the terms related to the respective search term.