Cooperative object construction in a multidatabase multisource data environment

In most manufacturing environments, data representing an object are scattered over multiple databases and can be updated by multiple sources. The author refers to such an environment as a multidatabase multisource (MDMS) data environment. One of the most important issues in an MDMS data environment is how to choose a value for an object when there exist multiple records of values for it. We present a model, called tuneup-schema multidatabase, by which the most beneficial set of values for a manufacturing object is determined, and the manufacturing process is optimized.