24. Conditional Operators WHERE key = value .find({key:value}) .find({key:{Operator:value}) WHERE key Condtion value SQL Conditions MongoDB Operators key > value key:{$gt:value} key < value key:{$lt:value} key >= value key:{$gte:value} key <= value key:{$lte:value} key <> value key:{$ne:value} key IN(value) key:{$in:[value]} key NOT IN(value) key:{$nin:[value]} key EXIST(value) key:{$exist:value} SQL Conditions MongoDB Oprators key = value key:value