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SQL was introduced in the 1970s. This language was created by Donald D. Chamberlin and Raymond and F. Boyce. The relational database of IBM (International Business Machine), named System R. In this, Store Data had to be managed, which this language was made to manage. The name of this language was then SEQUEL. SEQUEL was a trademark of Hawker Siddeley, a UK based aircraft company. Because of this SEQUEL was renamed SQL.
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