@ Peta
The is no relation to a individual entry and an organization. If there were, yes, some sort of relationship such as foreign key would make sense. Connections is not intended to build a directory where individuals are “assigned” to organizations. Generally users simply use Connections and similar plugins to build business lists/directories or people directories of individual within their business organization.
I know what you are seeking to do and I’ve done many custom jobs which list people within an organization.
Here’s a free extension that helps with that:
https://github.com/Connections-Business-Directory/Entry-Organization
Download using the green button, install like any other plugin and activate.
Enter your organizations and then enter the individuals. When entering individuals you will only be able to select the previously entered when adding an organization to the entry.
Then you can customize templates and use any of the methods available within the addon plugin to get and output a list of people within an organization.
The addon is admittedly not a perfect solution and could be built out with more features to make it more broadly usable but it does do the job.
Hope this helps! Let me know.