Giving a searched, I found this page here, about a local bank:
From the first link:
" This API is based on the W3C Web SQL Database Specification and W3C
Web Storage API Specification. Some devices already provide an
implementation of this spec. For those devices, the built-in support
is used instead of replacing it with Cordova's implementation. For
devices that do not have storage support, Cordova's implementation
should be compatible with the W3C specification.
This API is based on the WEB SQL Database Specification,
W3C and the WEB Storage API Specification. Some
devices already provide an implementation of them. In this case, the
feature of the apparatus is used instead of the implementation of Cordoba.
For devices without "persistence" support, the implementation of the
Cordoba must be compatible with the W3C specification.
As for making the submissions to the remote bank, you could, for example, work with simple requests, remembering AJAX from life and, using the language that receives them on the remote server, save this in the database.
Here's a topic from our gringo Stack brothers: