67. A computer-readable storage medium for storing program instructions executed by a processor to provide: mapping information for use in an information retrieval system, said information retrieval system receiving a query input from a user, said query comprising one or more terms representing one or more subjects of interest to said user, each of said one or more subjects having a search attribute corresponding to a first database, said information retrieval system is providing a feedback to said user, said feedback containing information generated as a result of executing the query input based on an association between said search attribute and an attribute corresponding to a second database of data from a data source, wherein the result comprises results from (a) querying the first database using said search attribute and a term from said one or more terms for said search attribute, and (b) querying the second database using said attribute and said term from said one or more terms for said search attribute, wherein said mapping information comprises: data for use by said information retrieval system to create said association between said search attribute and said attribute of data from said data source, wherein said attribute is not said search attribute.
67. A computer-readable storage medium for storing program instructions executed by a processor to provide: mapping information for use in an information retrieval system, said information retrieval system receiving a query input from a user, said query comprising one or more terms representing one or more subjects of interest to said user, each of said one or more subjects having a search attribute corresponding to a first database, said information retrieval system is providing a feedback to said user, said feedback containing information generated as a result of executing the query input based on an association between said search attribute and an attribute corresponding to a second database of data from a data source, wherein the result comprises results from (a) querying the first database using said search attribute and a term from said one or more terms for said search attribute, and (b) querying the second database using said attribute and said term from said one or more terms for said search attribute, wherein said mapping information comprises: data for use by said information retrieval system to create said association between said search attribute and said attribute of data from said data source, wherein said attribute is not said search attribute. 70. The computer-readable storage medium of claim 67 , wherein said data of said mapping information comprises identification of said data source.