MongoDb Questions

deleteOne() deletes the first matching document, while deleteMany() deletes all matching documents.

There is no difference; both commands perform the same action.

deleteOne() deletes documents permanently, while deleteMany() moves them to the trash.

deleteOne() deletes all documents, while deleteMany() deletes only the specified number of documents.

To reshape and transform the structure of output documents.

To filter documents based on matching criteria.

To group documents based on shared values.

To sort documents in ascending or descending order.

To establish a connection to the MongoDB server

To create and manage user accounts

To define the database schema

To execute queries against the database

To create and manage indexes on a collection

To store the results of a query, allowing for iteration over the returned documents

To handle authentication and authorization for database access

To define the structure of a document

Faster query performance

Reduced storage space requirements

Simplified data modeling and agility

Improved data integrity

Hashed Index

Spatial Index

Full Text Index

Array Index

All of the above

Check the log file for messages indicating successful startup

Use the systemctl status mongod command to view the service's status

Try to connect to the MongoDB server using the mongo shell

High Availability and Data Redundancy

Load Balancing

Data Sharding

Query Optimization

Primary Node

Replica Set

Mongos

Config Server

switch to myDatabase

change to myDatabase

connect myDatabase

use myDatabase