Integration of heterogeneous database systems

摘要

The data exchange method has the system specific primary key for data stored in a first databank system compared with a key mapping table holding the previously generated primary keys for both databank systems, with a primary key for the second databank system provided by a primary key generator when the primary key is not recorded in the key mapping table, or the primary for the second databank system allocated to the data when the primary key is provided by the key mapping table. Also included are Independent claims for the following; (a) a computer program for data exchange between databank systems; (b) a computer storage medium for a data exchange computer program; (c) a databank network system