First, synchronous replication may be used. In synchronous (not asynchronous) replication, each update or modification of a data structure is immediately replicated to all other replicas of the data structure existing on any other processing node of the distributed system as part of their local transaction. The asynchronous replication method provides a means for balancing network traffic over time. The asynchronous method also provides an effective means for tuning the performance of a particular distributed system; however, a problem of data update conflicts is introduced. A second conventional shared database model used multiple copies of a database, each resident at the distributed computing sites. As long as each distributed site operates in a read-only mode (i.e., no data modifications to the shared database multiple copies of the same data item can be located at multiple sites without raising any data integrity issues.
FIELD OF THE INVENTION The present invention relates to computer implemented database systems. Specifically, the present invention relates to conflict resolution a database system. DESCRIPTION OF RELATED ART Modern data processing systems, once the domain of large centralized mainframe computers, have evolved into collections of dispersed independent processing systems interconnected by networked links.
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