Auto Email if no record added in parent table
I am running a database where the user will enter his monthly workplan till 25th of every month. Now I want to create a script which will check if no new record is added since last 25th to the parent table (which also contains a portal) then will automatically send out an email. This activity has to be conducted on the 25th of every month.
Kindly also explain how to create the script.