When external keys are in use (ei columns stored in their own table), we are able to find the orphaned record in the external key table and turn it into a deletion stub.
当使用外键时(ei列被存储在它们自己的表中)，可以在外键表中找到孤立的记录并将其转化为删除存根。
3
These turn on automatically when the bag is open, making it easy to locate keys, lipstick, charge cards or pepper spray!