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  • Database training

2.1.05. SQL

  • Structured Query Language
    • (SQL or SEQUEL)
    • Wikipedia reference
  • Success of relational databases
  • Developed for SystemR at IBM
  • ANSI standardised
  • SQL-1986 (SQL1), ongoing extension
  • SQL-1992 (SQL2), current version (Oracle 9i)
  • SQL-1999 (SQL3), regular expression matching, recursive queries
  • SQL-2003, XML features, auto-generated columns
‹ 2.1.03. QBE text-format exampleup2.1.05b. SQL command syntax ›
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