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CREATE TABLE AEREOPORTI( CodAereoporto CHAR(3) PRIMARY KEY, Nome VARCHAR(50) NOT NULL, Città VARCHAR(50) ); CREATE TABLE VOLI( NumVolo INTEGER PRIMARY KEY, Partenza CHAR(3) NOT NULL, Arrivo CHAR(3) NOT NULL, CONSTRAINT FK1 FOREIGN KEY(Partenza) REFERENCES AEREOPORTI(CodAereoporto) ON DELETE CASCADE ON UPDATE CASCADE, CONSTRAINT FK2 FOREIGN KEY(Arrivo) REFERENCES AEREOPORTI(CodAereoporto) ON DELETE CASCADE ON UPDATE CASCADE );
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