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Foreign key constraints
Actions Constraint properties Column Creating a foreign key over a non-indexed column would automatically create an index on it. Alternatively, you can define an index below, before creating the foreign key. Foreign key constraint (INNODB)
Database Table Column
ON DELETE ON UPDATE
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Internal relationships Documentation
Column Internal relation An internal relation is not necessary when a corresponding FOREIGN KEY relation exists.
id
enrol
status
courseid
sortorder
name
enrolperiod
enrolstartdate
enrolenddate
expirynotify
expirythreshold
notifyall
password
cost
currency
roleid
customint1
customint2
customint3
customint4
customint5
customint6
customint7
customint8
customchar1
customchar2
customchar3
customdec1
customdec2
customtext1
customtext2
customtext3
customtext4
timecreated
timemodified