How to properly map data from AngularJS forms to Hibernate back-end objects?

Question

Java

Hello colleagues.
I apologize for the style of presentation, but I don’t even know from which side to approach the solution of the problem, therefore I will state it in my own words.
There is an old RDBMS application. Now they decided to replace it with a new version that I will write.
Web-UI on AngularJS, back-end on Spring Boot.
Many screens on which there are ten fields from various "multi-column" tables.
Writing a request to select data for displaying labor is not (only a dozen joins). But what about when the data needs to be updated?
I would not want to write a bunch of code that will keep track of what has changed on the back end and climb to update one field in several objects.
Are there good practices for such a case?

Answer 1

looking what size of tables. and looking at that for the table. we had an application in which one table of 2-3 mb weighed the answer for it. redraw it all without brakes, requests were sent through a drop-down select