Consider the following relations MobileMaster & MobileStock:- MobileMaster M_Id M_Company M_Name M_Price M_Mf_Date MB001 Samsung Galaxy 4500 2013-02-12 MB003 Nokia N1100 2250 2011-04-15 MB004 Micromax Unite3 4500 2016-10-17 MB005 Sony ХрeriaM 7500 2017-11-20 MB006 Орpo SelfieEx 8500 2010-08-21

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