multiUpdateObject Array from example
There are 2 variants to update multiple objects per one request:
1) Use native methods "$set", "$unset", "$inc", etc. (they support only primitive types)
2) Use Appery.io implementation for that. (it supports all data types)
In the example you've provided "name" is a property of the column "major"
If you want to update pointer value, please use a simple request like:
{"category":{"collName":"Categories","_id":"57b6bd3ee4b07e8542fd8ae9"}}