Let us discuss this concept with the help of an example: In this method, we can create the name, password, and roles of an administrative user. In MongoDB, you can create an administrative user using the createUser() method. To Encrypt the Password During Transmission, Use TLS/SSL In order To Encrypt It. db.createUser() Sends Password And All Other Data to The MongoDB Instance Without Any Encryption.Also, you are not allowed to create users in the local database. The admin user has the privilege to maintain all the users. In MongoDB, the first created user in the database must be the admin user.It takes the same field as the getLastError Command takes. It manages the level of Write Concern for the creation operation. writeConcern: It is an optional parameter. passwordDigestor: It is used to check whether the server or client digests the password.mechanisms: It is used to specify the SCRM mechanisms or mechanisms for creating SCRM user credentials.authentication restrictions: Authentication permission of the user.It is generally used when the role is specified in a different database. Or you can specify a document that contains the role and db fields. To specify the roles you can use any of the following syntax: In this field, you use built-in roles or you can create you own role using db.createRole(role, writeConcern) method. You can also create a user without roles by passing an empty array. roles: Access Level or Privilege of a user.
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