MongoDB Mastering MongoDB for Beginners (Theory and Projects) - Solution (Read Documents) - `1

The video tutorial covers how to retrieve and format data from a database collection using DB.createQuiz. It explains the use of the 'pretty' function for better data visualization and demonstrates querying specific student data by name. The tutorial also shows how to filter documents based on marks in specific subjects like French, and how to perform complex queries with multiple conditions for subjects like science and history. The video concludes with a reflection on the learning process and encourages hands-on practice.

What is the initial step in using the existing data in the 'create quiz' collection?

• Delete the existing data

• Create a new collection

• Print all documents in the collection

• Update the collection schema

Why is the 'pretty' function used when printing documents?

• To format the output for better readability

• To encrypt the data

• To delete unnecessary fields

• To increase the speed of data retrieval

Which function is used to format the output of documents in a collection?

• Sort

• Filter

• Aggregate

• Pretty

How can you retrieve data for a specific student named Flavin?

• By creating a new document for the student

• By querying with the student's name as a parameter

• By using the 'delete' function

• By updating the student's record

What query would you use to find students who scored 9 in French?

• Find students with 9.5 marks in Math

• Find students with 8 marks in History

• Find students with 9 marks in French

• Find students with 9 marks in Science

What marks are used to query students in both Science and History?

• 8.5 in Science and 9.5 in History

• 7 in Science and 9 in History

• 9 in Science and 8 in History

• 8 in Science and 9.5 in History

What is the purpose of the video tutorial?

• To teach how to delete documents

• To demonstrate data encryption techniques

• To guide on querying and formatting data in a collection

• To explain how to create a new database