Understanding Relational vs. Non-Relational Databases

Introduction: The Database Decision

Choosing a database is a core architectural decision. Relational (SQL) and Non-Relational (NoSQL) systems organize and scale data very differently.

SQL vs. NoSQL Core Differences

SQL (Relational)

Organizes data into structured tables with relationships. Enforces schema constraints and guarantees ACID transactions. Ideal for fintech or complex structures.

NoSQL (Non-Relational)

Stores unstructured or semi-structured data (documents, key-value, graphs). Designed for rapid scaling and flexible development schemas.