Welcome back, learner! In previous lessons, we've explored various MongoDB update operators such as $set for updating field values, $inc for incrementing numeric values, $mul for multiplying numeric values, as well as $min and $max for conditional updates. In this short lesson, we'll delve into update operators specifically designed for deleting and renaming fields in MongoDB documents. These operators, $unset and $rename, will help you manage and organize your data more efficiently.

Imagine you need to delete the related_comics field from all documents in the comic_books collection. Here's how you can do that using the $unset operator:

In this snippet, we first switch to the comic_book_store_db database using the command. We then call the method on the collection to update all documents within it. The empty object specifies that the update should apply to every document. The operator, followed by , removes the field from all documents in the collection, effectively cleaning up the dataset by deleting this field.