Bulk write operations in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to initialize an unordered bulk operation on the 'users' collection.

MongoDB

const bulk = db.collection('users').[1]();

Drag options to blanks, or click blank then click option'

AstartBulk

BinitializeUnorderedBulkOp

CbulkWrite

DcreateBulkOp

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'bulkWrite' which is a different method for bulk operations.

Using non-existent methods like 'startBulk' or 'createBulkOp'.

The method initializeUnorderedBulkOp() starts an unordered bulk operation on a collection.

2fill in blank

medium

Complete the code to add an insert operation for a document with name 'Alice' to the bulk operation.

MongoDB

bulk.[1]({ name: 'Alice' });

Drag options to blanks, or click blank then click option'

AupdateOne

BinsertOne

Cinsert

DaddInsert

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'insertOne' which is used outside bulk operations.

Using 'updateOne' which is for updates, not inserts.

The insert() method adds an insert operation to the bulk operation.

3fill in blank

hard

Fix the error in the code to update a document where name is 'Bob' by setting age to 30 in the bulk operation.

MongoDB

bulk.find({ name: 'Bob' }).updateOne({ [1]: { age: 30 } });

Drag options to blanks, or click blank then click option'

A$set

B$update

Cupdate

Dset

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the dollar sign in the operator name.

Using 'update' which is not a valid update operator.

The update operator $set is required to set fields in MongoDB update operations.

4fill in blank

hard

Fill both blanks to add a delete operation for documents where status is 'inactive' and then execute the bulk operation.

MongoDB

bulk.find({ status: 'inactive' }).[1]();
const result = bulk.[2]();

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AdeleteMany

Bexecute

Cremove

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'deleteMany' which is not a method in legacy bulk operations.

Using 'run' instead of 'execute' to run the bulk.

find({ status: 'inactive' }).remove() adds a delete operation for multiple documents, and execute() runs the bulk operations.

5fill in blank

hard

Fill all three blanks to add an update operation that increments 'score' by 5 for a document where 'level' is 10, then add an insert for a new user, and finally execute the bulk operation.

MongoDB

bulk.find({ level: 10 }).[1]({ [2]: { score: 5 } });
bulk.[3]({ name: 'Charlie', level: 1 });
const res = bulk.execute();

Drag options to blanks, or click blank then click option'

AupdateOne

B$inc

Cinsert

DupdateMany

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'updateMany' instead of 'updateOne' when only one document should be updated.

Using '$set' instead of '$inc' to increment a value.

Using 'insertOne' which is not used in bulk operations.

updateOne() updates a single document, $inc increments a field, and insert() adds a new document to the bulk operation.