http://doi.acm.org/10.1145/800083.802688 Jai Menon David K. Hsiao Access Control Mechanism of a Database Computer (DBC). 17-28 NNP1980/P017.pdf 1980 conf/sigmod/80nnp Computer Architecture for Non-Numeric Processing db/conf/sigmod/nnp80.html#MenonH80