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

The video tutorial guides viewers through creating a database collection, populating it with data, and executing queries to filter documents based on specific conditions. It demonstrates how to query documents with a quantity less than 15 and a size less than 12, providing step-by-step instructions and explanations. The tutorial concludes with a summary and an invitation for questions.

What is the first step in setting up a database collection?

• Updating existing records

• Writing queries

• Creating the collection

• Deleting old data

Which operator is used to find documents with a quantity less than a specified value?

• Lt

• Eq

• Ne

• Gt

In the context of querying, what does 'qty' refer to?

• A field representing quantity

• A field representing query type

• A field representing quota

• A field representing quality

How do you access a nested field like 'size' within an 'item' object?

• Directly use 'size'

• Use 'item.size'

• Use 'size.item'

• Use 'item->size'

What is the condition to retrieve documents with a size less than 12?

• Use 'size.item < 12'

• Use 'item < 12'

• Use 'item.size < 12'

• Use 'size < 12'