In version 11 we have added a new tool that allows you to explore the whole master details relationships tree in your project. In version 11 you may have hundreds of tables that can be split into multiple groups. Diagram only shows table that belong to the current group and some master-details relationships may not be visible. This tool allows you to see all the relationships of the table, both master and details.
Click the context menu icon of any table on the diagram and choose 'Master-details relations'
On this dialog you can see all the relationships of the current table, create new ones and explore the relations tree by clicking arro links that will take you to the relations of other tables, Orders and Categories in this example.
