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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
Drop Drop
ON DELETE ON UPDATE
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ON DELETE ON UPDATE
+ Add column
+ Add constraint
Internal relationships Documentation
Column Internal relation An internal relation is not necessary when a corresponding FOREIGN KEY relation exists.
id
create_time
create_user
change_time
change_user
status
sn
alias
ip_address
real_ip
state
terminal_tz
heartbeat
transfer_mode
transfer_interval
transfer_time
product_type
is_attendance
is_registration
purpose
controller_type
authentication
style
upload_flag
fw_ver
push_protocol
push_ver
language
is_tft
terminal_name
platform
oem_vendor
log_stamp
op_log_stamp
capture_stamp
user_count
transaction_count
fp_count
fp_alg_ver
face_count
face_alg_ver
fv_count
fv_alg_ver
palm_count
palm_alg_ver
lock_func
last_activity
upload_time
push_time
is_access
area_id