History IBM Sequel language developed as part of System R project at the IBM San Jose Research Laboratory Renamed Structured Query Language(SQL) ANSI and ISO standard SQL: SQL-86 SQL-89 SQL-92 SQL:1999 (language name became Y2K compliant!) SQL:2003 Commercial systems offer most,if not all,SQL-92 features,plus varying feature sets from later standards and special proprietary features. Not all examples here may work on your particular system. Database System Concepts-6th Edition 3.3 @Silberschatz,Korth and SudarshanDatabase System Concepts - 6 3.3 ©Silberschatz, Korth and Sudarshan th Edition History IBM Sequel language developed as part of System R project at the IBM San Jose Research Laboratory Renamed Structured Query Language (SQL) ANSI and ISO standard SQL: SQL-86 SQL-89 SQL-92 SQL:1999 (language name became Y2K compliant!) SQL:2003 Commercial systems offer most, if not all, SQL-92 features, plus varying feature sets from later standards and special proprietary features. Not all examples here may work on your particular system