How to update table data in Angular 7?

Question

Angular

There is a table in which the data from a DB is loaded.
how to make it so that when data is deleted from the table, it is updated, otherwise it turns out that they are deleted in the database and not on the page

Answer 1

well, you need to send updates from the backend that there is no more value in the database:
globally, there are two approaches: push and pull
pull - you send a request to the backend every n seconds, they say give the values ​​​​from the database and update
the push plate every time - via WebSockets or SSE notifications receive updates from the backend (you need to implement sending notifications on the backend)