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create table Course(
Cno char(4) primary key,
Cname char(40),
Cpno char(4),
Ccredit smallint,
foreign key(Cpno) references Course(Cno)
)
create table Course(
Cno char(4) primary key,
Cname char(40),
Cpno char(4),
Ccredit smallint
CONSTRAINT FK_Table_1_ke1 FOREIGN KEY(Cpno) references Course(Cno)
);
foreign key(Cpno) references Course(Cno)