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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.
id
q1_1
q1_2
q1_3
q1_4
q1_5
q2_1
q2_2
q2_3
q2_4
q3_1
q3_2
q3_3
q3_4
q4a_1
q4a_2
q4a_3
q4a_4
q4b_1
q4b_2
q4b_3
q4b_4
q5a_1
q5a_2
q5a_3
q5a_4
q5b_1
q5b_2
q5b_3
q5b_4
q6_3
q6_4
q6_5
ip_address
created_at