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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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+ Add constraint
Internal relationships Documentation
Column Internal relation An internal relation is not necessary when a corresponding FOREIGN KEY relation exists.
lotto_id
lotto_type
lotto_name
bet_twodit_up
bet_twodit_down
bet_three_up
bet_three_toad
bet_three_bottom
bet_three_front
bet_run_up
bet_run_down
create_by
create_at