NoSQL vs SQL

Summary

The broad comparison between schema-flexible NoSQL databases (document, key-value, wide-column) and structured relational SQL databases — each with different trade-offs for consistency, flexibility and scale.

How to Learn This

1List 3 scenarios where NoSQL fits better and 3 where SQL fits better.
2Compare how the same data (e.g. a blog post with comments) is modeled in each.
3Learn that most real systems use both — polyglot persistence — rather than picking one exclusively.

Migrations

MongoDB Basics

More topics in NoSQL Databases

MongoDB Basics Document Model CRUD Operations Aggregation Pipeline Indexing in MongoDB Redis Basics Key-Value Store Data Modeling in NoSQL When to Use NoSQL Cassandra (Overview)DynamoDB (Overview)

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