Multiple database client transparency system and method therefor

摘要

A three-tier system is built up as: one or more client applications, one or more server applications, and one or more database systems. The server application provides a service that can be shared among multiple client applications. Server applications store their data in multiple databases. A client transparency mechanism and a server transparency mechanism are added. A database system on a clustered node is used for the database management. Server applications implement transactional behavior and the server side of the protocol so that the client applications may recover from server application and database system failures. A cluster application programming interface is used to determine when to retry. Information is stored in the server transparency mechanism so that the outcome of the transaction can be determined.