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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
company_id
branch_id
student_id
blood_group
height
weight
vision
allergies
chronic_condition
medication
doctor_name
doctor_mobile
preferred_hospital
emergency_name
emergency_mobile
emergency_relation
vaccination_status
last_checkup_date
special_care_required
special_care_notes
visible_to_teacher
alert_level
record_status
remarks
created_by
updated_by
delete_status
created_at
updated_at