Oracle 2
From Oracle FAQ
Oracle 2 was the first commercially available version of the Oracle database and also the first relational database on the market to use SQL.
Also see Oracle 3, Oracle 4, Oracle 5, Oracle 6, Oracle 7, Oracle 8, Oracle 8i, Oracle 9i, Oracle 10g and Oracle 11g.
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History and Support Status
Release date: June 1979
Status: No longer supported.
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Features introduced
The following new features were introduced with Oracle 2:

