Lesson
Update Mongo Documents using updateOne, updateMany, $set and $unset operations
Update MongoDB documents with $set and $unset operators: modify, add, and remove properties, including nested fields, in a single operation.
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In this lesson, we learn that updating documents in MongoDB involves using the updateOne and updateMany methods along with operators like $set and $unset.
The $set operator allows us to modify existing properties or add new ones, even in nested structures, while the $unset operator removes specified properties from a document.
We demonstrate how to use these operators to change a document's salary, modify nested personal information, and remove fields like position.
We also show how to combine $set and $unset in a single operation for efficient data management.