Tables are not connected with objects. Tables are connected by a relationship. You would have a field in each table that are related. To manage relationship go File, Manage, Database then click relationships.
Thank you for the helpful tips and apologies for my simplistic naive understanding.
Can I assume if I am using two tables and one layout then I duplicate all the fields on table2 onto table1 and create relationship across only those fields of tables2 to that on table1?
ok, thanks to your link I have finally worked it out. Your help is much appriciated. Thanks for taking the trouble to reply.