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Answer by Thorsten Kettner for Problem of matching unique or primary key for...
I see that you have accepted the other answer. So maybe you don't need any more help on this. After all, your request is not only about how to technically introduce a foreign key constraint in the...
View ArticleAnswer by Koen Lostrie for Problem of matching unique or primary key for this...
To reference a composite primary key you need to match all the columns. Example:create table table_a ( num1_n number not null, num2_n number not null, PRIMARY KEY(num1_n, num2_n));create table table_b...
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Problem of matching unique or primary key for this column-list
I have work to do in SQL, and I have a problem about the referencing of a key. So I have two tables:CREATE TABLE Surveillances( NumEns NUMERIC(10) REFERENCES Enseignants, DateHeureDebut TIMESTAMP(0),...
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