![database design - MySQL is there a point to having a primary key on a lookup table which referrers to a primary key on another table which is indexed? - Stack Overflow database design - MySQL is there a point to having a primary key on a lookup table which referrers to a primary key on another table which is indexed? - Stack Overflow](https://i.stack.imgur.com/Bousa.png)
database design - MySQL is there a point to having a primary key on a lookup table which referrers to a primary key on another table which is indexed? - Stack Overflow
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KB-1413 MySQL Best Practices - Primary Key or unique index on every table - Appian Knowledge Base - Support - Appian Community
![mysql - Is it required to have primary keys from both tables in lookup table as well? - Stack Overflow mysql - Is it required to have primary keys from both tables in lookup table as well? - Stack Overflow](https://i.stack.imgur.com/bNmbt.png)