MongoDB

Learn to update MongoDB documents with updateOne and updateMany. This MongoDB tutorial covers syntax, examples, and best practices for targeted updates.

Learn how to replace documents with replaceOne in MongoDB. Understand the syntax, behavior, and practical use cases with hands-on examples.

Learn how to delete documents and drop collections in MongoDB with clear examples and practical steps.

Understand MongoDB _id and ObjectId in depth — how the default identifier works, its structure, and why it matters. Hands-on steps and troubleshooting.

Learn to use MongoDB Compass for visual data exploration in this step-by-step tutorial. Discover how to browse databases, inspect documents, and run queries with an intuitive GUI—perfect for beginners.

Learn to model one-to-one relationships in MongoDB documents — embed or reference? Step-by-step guide with hands-on exercise and troubleshooting.

Learn how to model one-to-many relationships using embedded arrays in MongoDB. This lesson covers the core concept, step-by-step implementation, practical examples, and when to choose embedded arrays over references.

Model many-to-many relationships with references in MongoDB. Learn how to store related data using arrays of document references, perform joins with $lookup, and choose when to use references over embedding.

Learn how to create indexes in MongoDB to dramatically speed up your queries. This lesson covers basic index creation, choosing the right fields, and troubleshooting common pitfalls.

Explore single and compound indexes in MongoDB: how they work, when to use each, and hands-on examples to speed up your queries.

Learn how to use MongoDB text indexes for fast, flexible search queries. This tutorial covers creating indexes, searching text fields, and handling edge cases.

Learn to set up a simple aggregation pipeline in MongoDB. This hands-on tutorial covers the core stages, step-by-step setup, common pitfalls, and what to explore next.