📄️ Relational Database Concepts
Build a strong PostgreSQL foundation by understanding the relational model — tables, keys, normalization, ACID, and how they shape every query you will write.
📄️ PostgreSQL Core Concepts
Build a strong PostgreSQL foundation by understanding RDBMS architecture — clusters, databases, schemas, roles, MVCC, WAL, and how they shape real-world operations.
📄️ PostgreSQL vs SQL
Distinguish the SQL language from the PostgreSQL database, understand PostgreSQL-specific extensions, and compare PostgreSQL versus MySQL in depth.