18 interview questions for developers (2024)

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authentication

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normalization

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relational database

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Inconnuat Jan 23, 2023

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full-text search

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Damienat Oct 23, 2023

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18 interview questionsfor developers (2024)

Test your developer skills before an interview with 18 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

18 interview questionsfor developers (2024)

Test your developer skills before an interview with 18 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

How to change the default index of a MongoDB collection

Given a MongoDB connection URL, infer the authentication mechanism and the port number.

Design a MongoDB schema for a database of landscapers and the services they offer.

Get the list of customers linked to a given list of orders requires exactly 1 query

MongoDB uses a document-based data model to store information.

List all existing orders can be done on the clients collection or on the landscapers table

Store the searches in a collection "searches" with a reference in the document "search"

Persisting an order for given availabilities is atomic, Listing the ids of landscapers who have already worked with a given client requires exactly 2 queries

How to use the aggregate function in MongoDB

Design a MongoDB schema to store the data of a list of landscapers and their services.

MongoDB allows incremental mapReduces to allow regular or on-demand data updates

How to prevent a MongoDB user from creating a collection with the same name as an existing collection?

How to index embedded data in MongoDB

MongoDB is schemaless, indexes are generated automatically

MongoDB uses a data storage architecture that is based on what fundamental concept?

MongoDB supports text search and the ability to perform full-text queries.

Explain the differences between a single index and a composite index in MongoDB.

What is one of the main differences between MongoDB and relational databases such as PostgreSQL regarding data model?