I have a database which has a lot of tables. Many of these tables are related but I didn't create the database and do not understand the logic that was behind making the relationships.
However I am working on data involving Customers within the database.
Some tables have customers with their contact data, other with the products they ordered and others which have just all the customers in them etc.
If I were to add a new customer or a product in the "customer" or "products available" tables, how can I make sure that they are reflected in the remaining tables.
Also we get a monthly data dump which I upload into the database that has customers in it too. I find this task a bit daunting. Any help on this will be very much appreciated.
Thank you.