Logical Operators

Operator	Description	Example
$and	Selects documents where all passed in conditions are met.	{$and: [ {c_bpm: {$gt: 70}, {c_bpm: {$lt: 100}} ] }
$or	Selects documents where any passed in conditions are met.	{$or: [ {c_bpm: {$gt: 70}, c_bmi: {$gt: 24.9}} ] }
$not	Evaluates to true if the property or expression evaluates to false.	{"$not": "c_active"}
$nor	Selects documents where none of the passed in conditions are met.	{$nor: [ {c_bpm: {$gt: 70}, c_bmi: {$gt: 24.9}} ] }