Patent ID: 6088694
Filing Date: 2000-07-11
Classification: G06F,Y10S

Abstract:
A method of modifying a reference file that is maintained in file storage by a file manager and is referentially linked from a database management system (DBMS) while continuously maintaining the referential link to the reference file for DBMS users, the method comprising the steps of:creating a copy of the reference file, while continuously permitting read-only access to the stored reference file to system users directly through the file manager;performing file modification operations on the copy of the reference file;permitting continuous availability of the stored reference file to DBMS users during the file modification operations by continuously maintaining the link to the stored reference file during the file modification operations;introducing the modified reference file into the file storage;updating the link between the DBMS and the reference file to refer to the modified reference file in a single transaction; andperforming automatic backup of the modified file by providing a copy of the modified reference file to a backup server.