![mysql - why do I need grandparent and parent fk in child table (identifying relationship)? - Stack Overflow mysql - why do I need grandparent and parent fk in child table (identifying relationship)? - Stack Overflow](https://i.stack.imgur.com/E3Srk.png)
mysql - why do I need grandparent and parent fk in child table (identifying relationship)? - Stack Overflow
![mysql - Joining Parent & Child ID's on 2 tables and returning result from another row - Stack Overflow mysql - Joining Parent & Child ID's on 2 tables and returning result from another row - Stack Overflow](https://i.stack.imgur.com/J1ZfF.jpg)
mysql - Joining Parent & Child ID's on 2 tables and returning result from another row - Stack Overflow
![sql server - Parent/Child Relationship Table Design - What's The Best Practice? - Database Administrators Stack Exchange sql server - Parent/Child Relationship Table Design - What's The Best Practice? - Database Administrators Stack Exchange](https://i.stack.imgur.com/8hW7M.png)
sql server - Parent/Child Relationship Table Design - What's The Best Practice? - Database Administrators Stack Exchange
![SQL Inheritance: Preventing that a parent have multiple children. Auto insert and delete parent and prevent deletion of child if parent is referenced by a foreign key | BubbleSorted SQL Inheritance: Preventing that a parent have multiple children. Auto insert and delete parent and prevent deletion of child if parent is referenced by a foreign key | BubbleSorted](https://bubblesorted.raab.link/sites/default/files/styles/large/public/image/concrete-table.png?itok=SLOHkA_z)
SQL Inheritance: Preventing that a parent have multiple children. Auto insert and delete parent and prevent deletion of child if parent is referenced by a foreign key | BubbleSorted
![database design - Mysql Workbench generates an additional FK in child of a child table referencing the Parent of its Parent - Database Administrators Stack Exchange database design - Mysql Workbench generates an additional FK in child of a child table referencing the Parent of its Parent - Database Administrators Stack Exchange](https://i.stack.imgur.com/wUprl.png)
database design - Mysql Workbench generates an additional FK in child of a child table referencing the Parent of its Parent - Database Administrators Stack Exchange
![Determine if "item" in parent table or child table - Databases - SitePoint Forums | Web Development & Design Community Determine if "item" in parent table or child table - Databases - SitePoint Forums | Web Development & Design Community](https://i.stack.imgur.com/hfkwm.png)