I'm new to Magento 2 extension development. I'm trying to create a custom extension page on the backend. I've done with the custom page with HelloWorld shown on the admin template view. I will attach the screenshot of what I've trying to achieve.
I'm trying to create the form on my custom page like the screenshot. I've read the Magento 2 documentation but I find only the dynamic add data which is CRUD operation. I want only to update and save on the form on the database.
How can I create the form like the screenshot and save it on the database? Hope this makes sense.