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CREATE TABLE cities (name varchar(80) primary key,location point ); CREATE TABLE weather (city varchar(80) references weather,temp_lo int,temp_hi int,prcp real,date date );
Table weather refernces table cities and not itself.
Best regards
Mathias Zajaczkowski,UBIK S.A.Av. Cortot 7d,1260, Nyon, SwitzerlandTel : +41 22 362 04 60Fax: +41 22 362 04 61mailto:mathias@ubik.chhttp://www.ubik.ch
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Соглашаюсь с условиями обработки персональных данных