History of RDBMS

• Edgar Frank “Ted” Codd
• Born in Isle of Porland in England on Aug 19, 1923 – April 18, 2003
• Studied mathematics & chemistry at Exeter College, Oxford.
• In 1948, in New York to work for IBM as mathematical programmer
• While working for IBM, invented the RDBMS (Relational Database Management System)
• Principle for RDBMS were first outline by Dr. E. F. Codd in 1970 paper titled “A Relational Model of Data For Large Shared Data Banks”
• Common models were used at that time were hierarchical & networking, or even simple flat file data structure.
• Flat File means traditional approach which is used to store data or information.