I am currently working on a Database-Design for an insurer. Example-Entities are "Customer", "Address", "Vehicle", "Building" etc.. So there are many Relations and every Relation has some Context. e.g. Customer-Vehicle: Customer can be owner, driver, lessee of a vehicle... Basically I see two options on how to handle that:
(1): A Junction Table for every relation, with the two foreign keys and a context-ID. This would lead to many junction tables, with partially very few data in it. Selects would be a little bit difficult, because of the amount of tables.
(2): One Junction Table for the whole Database. This table would contain two foreign keys, one key as to what relation it is (e.g. customer-vehicle) and a key for the context. This would lead to a huge junction table, but also simpler selects.
Which one is the better solution? Are there any main advantages/disadvantages or even other solutions I didn't think of?
Thank you for your help. If I didn't express myself clear enough or something is not understandable, please ask. (English is not my native language)