MongoDB Mastering MongoDB for Beginners (Theory and Projects) - Solution ($exists)

The video tutorial guides viewers through creating a database collection, inserting data, and performing queries to find documents based on specific conditions. It covers how to identify documents with a 'qty' field, those without a 'code' field, and how to use the AND operator to combine conditions for more complex queries. The tutorial concludes with a solution to a quiz, reinforcing the concepts discussed.

What is the first step to create a collection and insert data into it?

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How can you display all documents where the quantity field is present?

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What query would you use to find documents where the code is not present?

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Explain how to use the AND operator to find documents with specific conditions.

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What is the significance of checking for a quantity equal to 20 in the query?

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