Difference between revisions of "Mysql setting constraints"

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Line 14: Line 14:
 
hostname varchar(30),
 
hostname varchar(30),
 
notes varchar(100),
 
notes varchar(100),
constraint my_1
+
constraint myconst_1
FOREIGN KEY (hostname)
+
FOREIGN KEY hostname
 
REFERENCES sslhosts (hostname)
 
REFERENCES sslhosts (hostname)
 
ON DELETE CASCADE ON UPDATE CASCADE
 
ON DELETE CASCADE ON UPDATE CASCADE

Revision as of 12:17, 22 January 2019

  CONSTRAINT education_ibfk_1
    FOREIGN KEY (profile_id)
    REFERENCES Profile (profile_id)
    ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT education_ibfk_2
    FOREIGN KEY (institution_id)
    REFERENCES Institution (institution_id)
    ON DELETE CASCADE ON UPDATE CASCADE,
 
 
CREATE TABLE notes
(
hostname VARCHAR(30),
notes VARCHAR(100),
CONSTRAINT myconst_1
FOREIGN KEY hostname
REFERENCES sslhosts (hostname)
ON DELETE CASCADE ON UPDATE CASCADE
);

http://www.mysqltutorial.org/mysql-primary-key/