I have not created a database from the ground up in a few years but am familiar with using access and the general methods. What I am trying to create is a database with data on a number of "Owner/Clients", all the "Vessels" each client owns, the "Vessel" details such as type of vessel, price etc., and then a final table on the "Policy Details" for each individual vessel. I have a good idea of the 4 tables I definitely (Owner Table, Policy Table, Product Table, and Vessel Table) but I am not sure what I need to set as primary, and foreign keys to keep all the data properly linked. The end result I am looking for is a main database table where we can type in for example a specific Vessel Name, or Owner Name and it would display all of the vessels owned by that owner and than all the corresponding information for each vessel. I have attached an excel sheet that displays a diagram of what I would like to build and an ideal end result. Any advice on how to set up these tables and or keys would be greatly appreciated as I feel I can build the database once I know what direction to start in with the tables. Thank you all in advance for taking the time to read this and for any help you can provide.