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What is the purpose of the updateOne() method in MongoDB?
What is the purpose of the updateOne() method in MongoDB?
- Updates a single document that satisfies a filter (correct)
- Updates multiple documents that satisfy a filter
- Deletes a document from the collection
- Inserts a new document into the collection
Which operator is used to increment a field by a specified value in MongoDB update operations?
Which operator is used to increment a field by a specified value in MongoDB update operations?
- $inc (correct)
- $push
- $set
- $add
What happens if the $inc operator is used on a field with a null value in MongoDB?
What happens if the $inc operator is used on a field with a null value in MongoDB?
- It increments the null value by the specified amount
- It deletes the field
- It generates an error (correct)
- It creates the field and sets it to the specified value
When using the updateMany() method in MongoDB, what does it do?
When using the updateMany() method in MongoDB, what does it do?
In MongoDB, what is the purpose of the $set operator in update operations?
In MongoDB, what is the purpose of the $set operator in update operations?
How would you update the 'salary' field from 70000 to 85000 for documents in the 'employees' collection in MongoDB?
How would you update the 'salary' field from 70000 to 85000 for documents in the 'employees' collection in MongoDB?
What does the $inc operator do in the 'db.updateopr.updateOne({_id:1}, {$inc:{qty:2}})' query?
What does the $inc operator do in the 'db.updateopr.updateOne({_id:1}, {$inc:{qty:2}})' query?
Which query decreases the quantity field by 2?
Which query decreases the quantity field by 2?
What is the purpose of the $rename operator in MongoDB update operations?
What is the purpose of the $rename operator in MongoDB update operations?
How does the $rename operator handle conflicts when updating the name of a field?
How does the $rename operator handle conflicts when updating the name of a field?
Which type of fields can the $rename operator rename using dot operator in MongoDB?
Which type of fields can the $rename operator rename using dot operator in MongoDB?
In MongoDB, what happens when the document already has a field with the new name while using the $rename operator?
In MongoDB, what happens when the document already has a field with the new name while using the $rename operator?
What does the $set operator do in MongoDB?
What does the $set operator do in MongoDB?
In MongoDB, how does $set behave when specifying multiple field-value pairs?
In MongoDB, how does $set behave when specifying multiple field-value pairs?
When using $set in MongoDB, what happens if the field being updated does not exist?
When using $set in MongoDB, what happens if the field being updated does not exist?
How can you update a top-level field in MongoDB using the $set operator?
How can you update a top-level field in MongoDB using the $set operator?
What do you need to use to specify a field within an embedded document in MongoDB?
What do you need to use to specify a field within an embedded document in MongoDB?
In MongoDB, how does $set behave when updating array elements?
In MongoDB, how does $set behave when updating array elements?
What does the $min operator do in MongoDB?
What does the $min operator do in MongoDB?
In MongoDB, what happens if the field does not exist when using the $min operator?
In MongoDB, what happens if the field does not exist when using the $min operator?
How does the $min operator treat existing fields when updating?
How does the $min operator treat existing fields when updating?
When using $max in MongoDB, what does it do if the specified value is greater than the current value of the field?
When using $max in MongoDB, what does it do if the specified value is greater than the current value of the field?
What does the $max operator do when updating a field that does not exist?
What does the $max operator do when updating a field that does not exist?
In MongoDB, what is the functionality of $max operator when comparing numbers?
In MongoDB, what is the functionality of $max operator when comparing numbers?
What happens when applying the $mul operator to a field that is not in the document?
What happens when applying the $mul operator to a field that is not in the document?
What is the syntax for applying the $mul operator to a field in an embedded document or array?
What is the syntax for applying the $mul operator to a field in an embedded document or array?
If the price field has a value of 10.99 and the quantity field has a value of 25, what will be the result after applying $mul to these fields?
If the price field has a value of 10.99 and the quantity field has a value of 25, what will be the result after applying $mul to these fields?
What will be the type of the value in the 'price' field after using the $mul operator to multiply Decimal128(10) by Int32(5)?
What will be the type of the value in the 'price' field after using the $mul operator to multiply Decimal128(10) by Int32(5)?
What may happen when multiplying values of mixed numeric types using the $mul operator?
What may happen when multiplying values of mixed numeric types using the $mul operator?
What is the outcome if a document already contains a price field and the $mul operator is applied to it?
What is the outcome if a document already contains a price field and the $mul operator is applied to it?
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