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drop table Courses; create table Courses(Course varchar(20), Prof varchar(20)); insert into Courses values("CS 310", "Wang"); insert into Courses values("CS 440", "Wang"); insert into Courses values("CS 480", "Wang"); insert into Courses values("MTH 205", "Smith"); insert into Courses values("MTH 172", "Smith"); select * from Courses; drop table CS310; create table CS310(Prof varchar(20), Student varchar(20), ); insert into CS310 values("Wang", "Corey Gray"); insert into CS310 values(null, "John Deer"); select * from CS310; drop table CS440; create table CS440(Prof varchar(20), Student varchar(20)); insert into CS440 values("Wang", "John Deer"); insert into CS440 values(null, "Mary Jane"); select * from CS440; drop table CS480; create table CS480(Prof varchar(20), Student varchar(20)); insert into CS480 values("Wang", "Mary Jane"); insert into CS480 values(null, "Thomas Anderson"); select * from CS480; drop table MTH205; create table MTH205(Prof varchar(20), Student varchar(20)); insert into MTH205 values("Smith", "Thomas Anderson"); insert into MTH205 values(null, "Sarah Connor"); select * from MTH205; drop table MTH172; create table MTH172(Prof varchar(20), Student varchar(20)); insert into MTH172 values("Smith", "Sarah Connor"); insert into MTH172 values(null, "Corey Gray"); select * from MTH172;