SQL/DS: IBM's First RDBMS
IEEE Annals of the History of Computing
By Hershel Harris,Bert Nicol
Issue Date:April 2013
In the late 1970s, IBM software labs were aligned with the IBM hardware families. The decisions to commercialize the relational database prototype called System R, which had been developed during the 1970s at the IBM Research facility in San Jose, Californ...