Greater-than / less-than range comparison operators.

• Category: MongoDB Operators — part of the MongoDB Tutorial on GoCareerGo
• Read the short summary above, then check the linked docs for full syntax/behaviour
• Interview tip: be ready to explain "$gt, $gte, $lt, $lte" in one sentence, then back it up with a tiny example

// $gt, $gte, $lt, $lte — minimal example
// db.collection.<operation>(...)