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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.
row_id
emp_id
option_id
entry_by
entry_dt
entry_tm
entry_ip
entry_lat
entry_log
modify_by
modify_dt
modify_tm
modify_ip
modify_lat
modify_log