Patent ID: 6233578
Filing Date: 2001-05-15
Classification: G06F,Y10S

Abstract:
A method for retrieving requested information from different database systems connected to a communication network, by retrieving information to satisfy an information retrieval request, wherein:the information retrieval request is constructed by a retrieval item that an information searcher wants to retrieve and a retrieval condition related to the retrieval item; and wherein the method comprises the steps ofstoring an information resource dictionary beforehand, in which an information of relationship between retrieval items and data items, the data items which are column names in each database and tables in each database, and items of the tables and the each database are contained;determining data items based on the retrieval item and the retrieval condition in the information retrieval request when receiving said information retrieval request;determining a database system to be searched by retrieving the information resource dictionary using the determined data items;generating an information retrieval statement which is a structured query language having a peculiar style of the determined database system;searching through said database system based on the information retrieval statement; andpresenting retrieved information to the information searcher.