How do online application building systems work without coding? And what technology has been used to build these systems?

Question

How do online application building systems work without coding? And what technology has been used to build these systems?

Hello friends
I'm looking for a guide to building application systems. Is anyone familiar with these systems? Do you know how these systems work? How to provide the ability to build applications for users without writing code? How many of the best can you introd

Answer 1

Those sites use frameworks. They are built up of predefined code that is accessed via classes or functions. Usually all you have to do is drag and click the object you want to include.

Answer 2

But i want create these system not applicarion with system

Answer 3

Lets clarify what building systems are you talking about? Give an
example.