How to use "Pointer" column in database in server code?
Posted: Mon Sep 14, 2015 9:02 pm
Hi Team,
Could you let me know how to make query, update or create with "Pointer" columns in the database?
e.g.
I have a collection called Invoice in which there is a column named 'customer', which is a pointer to the Users collection.
How should I write the 'criteria' for database activities:?
query all invoices that belong to a certain user?
create an invoice for a user
modify the user of an invoice
delete all invoice for a user
I have checked the manual of MongDB, and i can't seem to find anything about 'Pointer', is it something Appery.io invented?
In my case what would be the key benefit of using Pointer compared to just using a 'String' field that stores the userId?
Thanks
Dongzhi