Learn how modern databases store, index, and query data reliably at scale. Compare relational SQL tables with NoSQL key-value/document stores, understand B-Tree indexes, and review ACID guarantees.
Discover what a database is, relational vs non-relational architectures, SQL queries, indexes, and ACID transaction guarantees.
An architectural comparison between SQL relational databases (PostgreSQL, MySQL) and NoSQL databases (MongoDB, Redis, Firestore).