Who is Edgar F. Codd – Creator of the Relational Database Management System? Edgar Codd is the creator of the relational databases model (RDBMS), an extremely influential general theory of data management, the foundation of RDBMS, used everywhere nowadays. Early Life and Education Edgar (Ted) Frank Codd was born on 23 August, 1923, in Fortuneswell, […]

Aaron Hatfield’s Adder On 26 September, 1854, a certain Aaron L. Hatfield of Lewisburg, Pennsylvania, took out a US patent №11726 for machine for adding numbers. There is another calculating device from the time, made by another Hatfield, Jehu, from Glens Falls, New York, patented as Machine for calculating interest in 1844 (US patent №3574), […]