dpd is not defined

[devsubhajit]

I am trying to call dpd database for my project which is running well, but also I am running one server in node js, where I want to get collections from a get event,

I am using express in my node and using router, and when a particular router is called i want to fetch data from dpd database.

I tried to follow this, but if you can provide with an example will be a great help. I am not so smart :)

Thanks in advance