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>> hello all
>> 
>> normaly a UNIQUE PRIMARY KEY is unique but 
>> when you use a heritage, you can insert a duplicate key !!!!
>
>I assume you mean inheritance.
>
>Can you send us a little test sample please? 
>
>-- 
hello all

this is the problem:

example:

test=> CREATE TABLE MAN(name char(10) UNIQUE PRIMARY KEY);T

test=> CREATE TABLE PROFESSOR(scool char(20))INHERITS(MAN);

test=> INSERT INTO PROFESSOR(name) VALUES('DAVIS');
INSERT 54424 1

test=> INSERT INTO PROFESSOR(name) VALUES('DAVIS');
INSERT 54425 1







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