The original relational database language, developed by MM, was called SEQUEL (Structured English Query Language) to support Its prototype READS (Relational Database Management System) called System/R. The name later was changed from SEQUEL to Structured Query Language. In the beginning Cod started out a mathematician at IBM In 1970 when he came up tit the Relational Data Model.
He (Cod) said to have complained that SQL did not meet his mathematical model but It was his model that produced what Is the READS standard language some 35 years later and for the foreseeable future. After E. F. Cod wrote his paper on Relational Data Modeling, IBM spent a great deal of money, time, and energy developing and researching the Implementation of Cod’s model. In 1979. A new product called Oracle was released by a company then known as Relational Software. The Oracle database was the first commercially available elation database software that utilized SQL.
Once SQL gained commercial appeal, standards discussion began taking place within standards organizations and universities. Also SQL became a standard of the American National Standards Institute (ANSI) in 1 986, and of the International Organization for Standardization (ISO) in 1987. The most significant change introduced is the fifth revision of SQUALLS of the SQL database query language. It introduces a few new features such as: XML – related features (SMBXML) Window functions
The sequence generator, which allows standard sequences Two new column types; auto-generated values and identify-columns The new MERGE statement Extensions to the CREATE TABLE statement to allow “CREATE TABLE AS” and “CREATE TABLE LIKE” Removal of the poorly implemented “BIT” and “BIT VARYING” data types OLAP capabilities The documentation is not freely available. SQL 2003 may be purchased from ISO or ANSI. The zip archive contains a number of PDF files that define the parts of the SQL 2003 specification. History of Relational Databases By Car-M.
Analog purport its prototype READS (Relational Database Management System) called In the beginning Cod started out a mathematician at IBM in 1970 when he came up meet his mathematical model but it was his model that produced what is the READS time, and energy developing and researching the implementation of Cod’s model. In 1979, a new product called Oracle was released by a company then known as Institute.
