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NoSQL Database Operations Quiz

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Questions and Answers

What is the purpose of the command: db.transport.find({Max_speed: {$eq:250}}).pretty()?

To display vehicles with any speed less than 250
To display vehicles with a minimum speed of 250
To display vehicles with any speed greater than 250
To display vehicles with a maximum speed of 250 (correct)

What is the significance of using the $and operator in the command: db.transport.find({$and: [{Max_speed:{$lt:500}}, {Brand:{$eq:'Benz'}}]})?

It retrieves all vehicles with any speed, regardless of the brand
It retrieves all vehicles with a speed exactly equal to 500 and brand 'Benz'
It retrieves all vehicles with a speed less than 500 and brand 'Benz' (correct)
It retrieves all vehicles with a speed greater than 500 and brand 'Benz'

What is a key characteristic of MongoDB as mentioned in the text?

It is written in Java programming language
It is a relational database
It is a document-oriented database (correct)
It uses structured query language (SQL)

What is the role of a 'database' in MongoDB?

It contains physical containers for collections (D) Signup and view all the answers

Which company was involved in the development and support of MongoDB?

10gen (B) Signup and view all the answers

What type of programming language is MongoDB written in?

C++ (A) Signup and view all the answers

What is the main characteristic of a MongoDB collection?

All documents in a collection are of similar or related purpose (C) Signup and view all the answers

Which statement best describes the dynamic schema feature of MongoDB documents?

Documents within a collection can have different fields or structures (B) Signup and view all the answers

What is one advantage of storing data in a document-oriented database like MongoDB?

Ability to store diverse data structures within the same collection (D) Signup and view all the answers

Why was MongoDB developed as an open-source database server by MongoDB Inc. in 2009?

As a response to the need for modern applications requiring big data capabilities (B) Signup and view all the answers

Which version of MongoDB marked its first ready production release in March 2010?

1.4 (B) Signup and view all the answers

What is the primary purpose of building MongoDB as mentioned in the text?

Scalability, Performance, and High Availability (D) Signup and view all the answers

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