DB application? Data in the code in the form of tables?? Tuples related table?

Question

Java

Good evening everyone, I need to make a database application, the essence of which is:
Parse CSV files (Countries, cities, regions) => execute CRUD functions.
But I can't figure out how should I implement trace. conditions:
"The data must be presented in the code in the form of tables (each file is a table),
Each table has links to the tuples of the associated table."
I would be very grateful for any assistance!

Answer 1

https://stackoverflow.com/questions/6812170/countr...