Hello,
I've got 4 tables :
CREATE TABLE tableA (id SERIAL PRIMARY KEY NOT NULL, blahA TEXT);
CREATE TABLE tableB (id SERIAL PRIMARY KEY NOT NULL, blahB TEXT);
CREATE TABLE tableC (id SERIAL PRIMARY KEY NOT NULL, ida INT4 REFERENCES
tableA(id), idb INT4 REFERENCES tableB(id), blahC TEXT);
CREATE TABLE tableD (id SERIAL PRIMARY KEY NOT NULL, ida INT4, idb INT4, blahC TEXT,
CONSTRAINT checkAB FOREIGN KEY (ida, idb) REFERENCES tableC(ida, idb));
Is the definition of tableD sufficient, or should I do it this way
instead :
CREATE TABLE tableD (id SERIAL PRIMARY KEY NOT NULL, ida INT4 REFERENCES tableA(id), idb
INT4REFERENCES tableB(id), blahD TEXT, CONSTRAINT checkAB FOREIGN KEY (ida, idb) REFERENCES tableC(ida, idb));
which looks superfluous to me.
???
Thanks in advance
Jerome Alet
