UPDATE METHOD FOR OVERLAP DATA IN DIFFERENT TYPE DISTRIBUTED DATA BASE

摘要

PURPOSE:To update overlap data even if an update processing which cannot translate data in a standard data operation language by assembling a data update instruction from position information on an update part and data which is read. CONSTITUTION:At first, the requested update processing is executed in one computer system. Then, it is judged whether data on the updated part exists in the other computer system as overlap data or not. When overlap data does not exist, the processing is terminated. When overlap data exists, it is judged whether the executed update instructed can be translated into the standard data operation language or not. When it can be translated into the standard data operation language, the processing is terminated. When it cannot be translated into the standard data operation language, information on the position of the updated part is obtained and position information is held.