Practice Working With Mongodb For Data Science (19.4) - Advanced SQL and NoSQL for Data Science

Practice: Working with MongoDB for Data Science

Lesson 19.4Advanced SQL and NoSQL for Data Science

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10 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does CRUD stand for?
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Think about the basic operations in database management.
Question 2.
Write a command to find all users over the age of 25.
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Think about how to filter data in MongoDB.
3Question 3.
What does CRUD stand for?
- Create, Retrieve, Update, Delete
- Create, Read, Update, Delete
- Create, Read, Utilize, Delete
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Consider which operations are fundamental for data handling.
4Question 4.
True or False: Aggregation pipelines can only sum values.
- True
- False
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Think about the flexibility in aggregation capabilities.
Question 5.
Given a collection named 'products', construct a MongoDB command to find the top 5 best-selling products based on total sales.
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Use `$unwind` to deconstruct arrays before grouping.
Question 6.
Given a collection of 'locations', write a MongoDB query to return all points of interest within a certain radius of a given coordinate.
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Utilize geospatial queries with coordinates and max distance.

6 more questions in this section. Enroll free to practise them all.