A computer-implemented method for minimizing the amount of time to access current data in a database which may be stored wholly in a DASD-oriented external storage subsystem or partly in DASD and partly in a stored high-speed electronic store while maintaining coherency of the data with respect to multiple...http://www.google.de/patents/US5408653?utm_source=gb-gplus-sharePatent US5408653 - Efficient data base access using a shared electronic store in a multi-system environment with shared disks
