What is the purpose of the $gt operator in MongoDB?

The $gt operator in MongoDB is specifically designed to compare values and determine if one is greater than another. It is used in queries to filter documents based on the specified condition where a field's value exceeds a certain threshold. This operator can be invaluable when working with numerical data, dates, or any comparable types where assessing a greater value is necessary.

For instance, if you want to retrieve all documents where a score field is greater than 70, you would use a query with the $gt operator, which would return only those documents meeting this criterion.

In contrast, options that pertain to checking if a value is less than another or verifying field existence address entirely different functions and purposes within MongoDB's querying capabilities. Similarly, checking for field equality is handled by the $eq operator instead of $gt. Understanding the specific use of the $gt operator helps in accurately constructing queries and managing data retrieval effectively in a MongoDB database.