Oracle7 Server SQL Reference
History of SQL
The paper, "A Relational Model of Data for large Shared Data Banks," by Dr. E. F. Codd, was published in June 1970 in the Association of Computer Machinery (ACM) journal, Communications of the ACM. Codd's model is now accepted as the definitive model for relational database management systems (RDBMS). The language, Structured English Query Language(SEQUEL) was developed by IBM Corporation, Inc. to use Codd's model. SEQUEL later became SQL. In 1979, Relational Software, Inc. (now Oracle Corporation) introduced the first commercially available implementation of SQL. Today, SQL is accepted as the standard RDBMS language.