How can upload DHTMLX vault Files in my backend database

Vault
#1

plz suggest me anyone know

#2

Here you can find a detailed guide about the uploading process
https://docs.dhtmlx.com/vault/uploading_files.html
this example is based on the testing node.js server, which you can find in the dhtmlxVault package.
Vault uses REST API for processing server-side requests, so it is not critical to using server-side platform.