The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1999
Filed:
Sep. 25, 1995
Richard C Foltz, Round Rock, TX (US);
Sy Long Lin, Austin, TX (US);
John Vincent Meegan, Austin, TX (US);
Syed Abdul Wadood, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A database synchronization system for synchronizing a plurality of local databases in a plurality of distributed computing systems is disclosed. The plurality of distributed computing systems form a distributed computing environment (DCE). The synchronization system includes a system server, a registry database, coupled to the system server, a local area network (LAN) synchronization server, coupled to the system server, a LAN server synchronization library, coupled to the system server, and a LAN server, coupled to the LAN synchronization server and selected ones of the plurality distributed computing systems forming a LAN. Synchronization between the LAN and the DCE registry occurs when registry modifications in the registry database affecting at least one of the plurality of local LAN databases invokes the LAN server synchronization library to synchronize the affected database. The synchronization system utilizes a registry database coupled to each of the local databases. A primary replica is coupled to the registry database that synchronizes each local database within the DCE with the registry database. A secondary replica is then coupled to the primary replica, that synchronizes at least one local area network (LAN) server that includes selected ones of the plurality of computing systems and their respective databases with the registry database.