How to create a relational table with custom tables

[miyawakiski]

I would like to create a custom table in ServiceNow for an ER diagram like the one in the image.

I don't know which ServiceNow function I can use to create a table with the relationships shown in the image.

There seem to be various options such as reference keys and parent-child relationships, but which one should I use?

[Gomathi Kannan]

Hi @miyawakiski ,

I'm not seeing any image in your post. Have you attached it?

BR,

Gomathi K