INNODB，MySQL-多行的外键？

Question

say that I have a table A like that:

[my id (primary key) (auto increment)] [other values]

and another table B like that

[my id (primary key)] [id of the row in table A] [other values]

can I use the foreign key to link all the rows of table B to the unique row in the table A? The goal is to force the CANCEL to all rows in table B if that row in table A is deletet.

it would be possible to achieve the same result linking other tables similar to the B one, which contains multiple rows dependent of the unique row in table A?

I wasn't able to understand the guides in internet, so I ask here, where I know there are a lot of experts. thaks in advance.

Answer 1

If you are asking about foreign key relationship in Mysql - innoDB tables. Then yes if There is a table A having primary Key id

If this key is used as Foreign Key in Table B and while specifying relationship in PhpMyAdmin Relation view of Table B. We need to specify ON DELETE CASCADE. So whenever a record in Table A will be deleted its corresponding child records in Table B will be deleted.