A data processing system comprises a set of memory cards (10) and at least one central administration and processing unit (22). According to the invention, the memory cards and the processing unit together form a relational database. Each memory card contains a memory (28) for storing a set of instructions...http://www.google.de/patents/US5497418?utm_source=gb-gplus-sharePatent US5497418 - Data processing system having a set of memory cards
