Which is the method used in MongoDB to grant user

MongoDB: db. grantRolesToUser() method is used to grants an additional role and its privileges to a user.

What is the recommended way to delete a user in MongoDB?

The db. dropUser() method wraps the dropUser command. Before dropping a user who has the userAdminAnyDatabase role, ensure you have at least another user with user administration privileges.

Which method is used to return information for all users associated with a database in MongoDB?

NameDescriptiondb.getUser()Returns information about the specified user.db.getUsers()Returns information about all users associated with a database.db.grantRolesToUser()Grants a role and its privileges to a user.db.removeUser()Deprecated. Removes a user from a database.

Which method is used to delete a selected database MongoDB?

db. dropDatabase() the command is used to drop an existing database. This command will delete the currently selected database.

How do I see roles in MongoDB?

getRoles() returns inheritance information for the database’s user-defined roles. Set this field to 1 to retrieve all user-defined roles. Optional. Set the field to true to show role privileges, including both privileges inherited from other roles and privileges defined directly.

How do I delete a collection in MongoDB?

To delete a MongoDB Collection, use db. collection. drop() command.

Which of the following methods can be used in MongoDB for relation documents?

In MongoDB, you can create a relationship using the following methods: Embedded Relationships. Documented Reference Relationships.

How do I delete a database in MongoDB?

Select the database you want to delete with the help of USE <database> command. Following is the syntax of USE command. use <database_name>
Drop the database with the help of db.dropDatabase() command. Following is the syntax of USE command. db.dropDatabase()

How do I remove a user from MongoDB Linux?

MongoDB: db. dropUser() method is used to removes the user form the current database. The name of the user to remove from the database. The level of write concern for the removal operation. The writeConcern document takes the same fields as the getLastError command.

What is the difference between remove and delete in MongoDB?

They do the same. The difference is the values that return.

Article first time published on

How do I delete a specific field in MongoDB?

In MongoDB, the $unset operator is used to delete a particular field. The value specified in the $unset expression does not make any impact on the operation. The $unset has no effect when the field does not exist in the document. name of the column or field to be deleted.

Is the method used to limit the records in MongoDB?

The Limit() Method To limit the records in MongoDB, you need to use limit() method. The method accepts one number type argument, which is the number of documents that you want to be displayed.

What does find return in MongoDB?

find() returns the cursor of Result Set of a query by which you can iterate over the result set or print all documents.

Which method is used to display a record in MongoDB?

The pretty() Method To display the results in a formatted way, you can use pretty() method.

What are methods in MongoDB?

NameDescriptiondb.getSiblingDB()Provides access to the specified database.db.hello()Returns a document that reports the state of the replica set.db.help()Displays descriptions of common db object methods.db.hostInfo()Returns a document with information about the system MongoDB runs on. Wraps hostInfo

What is admin role in MongoDB?

Roles grant users access to MongoDB resources. … A role created in the admin database can include privileges that apply to the admin database, other databases or to the cluster resource, and can inherit from roles in other databases as well as the admin database. To create a new role, use the db.

Who can create and assign user roles in the database?

First, the (Database Administrator)DBA must create the role. Then the DBA can assign privileges to the role and users to the role.

Where does MongoDB collect documents given by users?

MongoDB stores documents in collections. Collections are analogous to tables in relational databases.

Which of the following is correct about MongoDB?

6. Which of the following true about mongoDB? Explanation: MongoDB is a cross-platform, document oriented database that provides, high performance, high availability, and easy scalability.

How do I reference one collection to another in MongoDB?

Manual references where you save the _id field of one document in another document as a reference. …
DBRefs are references from one document to another using the value of the first document’s _id field, collection name, and, optionally, its database name.

Which is the correct order in which MongoDB compares the types?

MongoDB sorts BinData in the following order: First, the length or size of the data. Then, by the BSON one-byte subtype. Finally, by the data, performing a byte-by-byte comparison.

How do I delete multiple collections in MongoDB?

In MongoDB, you are allowed to delete the existing documents from the collection using db. collection. deleteMany() method. This method deletes multiple documents from the collection according to the filter.

How do I delete collections?

On an Android phone or tablet, open the Currents app .
At the bottom, tap Collections.
Tap a collection.
Tap More. Delete collection.
Check the box, then tap Delete.

How do I delete my MongoDB Atlas account?

Outstanding invoices.
Active database deployments.
Projects.
Organizations.

How do I create an admin in MongoDB?

The first step is to specify the “username” and “password” which needs to be created.
The second step is to assign a role for the user. …
The db parameter specifies the admin database which is a special Meta database within MongoDB which holds the information for this user.

How do I list a database in MongoDB?

Use show dbs command from mongo shell to list all the available databases on MongoDB server. This will show the database name with there size. You can select any database using the use statement and work on it.

Which of the following command is used to delete database?

Drop database database_name command is used to delete a database.

How do you clear a shell in MongoDB?

cls command.
Ctrl+l (clear screen)

Which of MongoDB shell command deletes a single document Mcq?

collection. deleteOne() method. This method deletes a single document from the collection according to the filter. deleteOne() is a mongo shell method, which updates one document at at time.

How delete all MongoDB?

To delete all documents in a collection, pass an empty document ({}). To limit the deletion to just one document, set to true. Omit to use the default value of false and delete all documents matching the deletion criteria.