Hi,
I’m sorry for the late reply.
As for your query- since you wish to write and read records from your DB collection, make sure to set the dataset to Read and Write permissions.
Afterwards, the last updated item will be displayed in the form. In order to set the fields to the logged in user, you would need to use the Wix Users API to get the email of the logged in user.
To finish the process, create a filter using the email address (which is a unique value).
Regards,
Tal.