how i can load data from data base mysql on dhx form and grid version 6.0
There are no inbuilt connectors allowing to load the data directly from your database.
All the dhtmlx components use REST API allowing to communicate with any backend. also, the format of data is a common json so there is no need to write the additional code for the data format customization.
is there any example to update and delete form and datatable use REST API??
Unfortunately currently there are no ready examples for integration with the backend databases.