Patent ID: 7197554

Claim:
A data linkage method for linking data between a first and a second computer system via a disk system, the method comprising: preparing a program generation tool on the first computer system that provides an interface with which to define a flow of data between the first and second computer systems, the program generation tool displaying a data stream definition window on a console and prompting a user to enter a data stream definition including an extraction object, a data storage object, a data transfer direction therebetween, a plurality of data conversion objects, and an intermediate file link, the program generation tool determining a data linkage program dividing point based on the entered data stream definition, the program generation tool generating according to the entered data stream definition, in the first computer a first program and a second program configured to link data between the first and second computer systems, the first program being adapted to be run on the first computer system, the second program being adapted to be run on the second computer system in such a way that the first and second computer systems are linked with one another; transferring the second program to the second computer system; and executing the first program and the second program on the first computer system and the second computer system, respectively, to realize a data linkage.