Hi,
What is a difference, if any, between:
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ALTER TABLE ONLY employee_role
ADD CONSTRAINT fk_survey_id_employee_id FOREIGN KEY (survey_id,
employee_id) REFERENCES employee_survey(survey_id, employee_id) MATCH FULL
ON UPDATE C
ASCADE ON DELETE CASCADE;
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AND
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ALTER TABLE ONLY employee_role
ADD CONSTRAINT fk_survey_id FOREIGN KEY (survey_id) REFERENCES
employee_survey(survey_id) MATCH FULL ON UPDATE C
ASCADE ON DELETE CASCADE;
ALTER TABLE ONLY employee_role
ADD CONSTRAINT fk_employee_id FOREIGN KEY (employee_id) REFERENCES
employee_survey(employee_id) MATCH FULL ON UPDATE C
ASCADE ON DELETE CASCADE;
_____________________________________
Thank you,
Igor