Database Selection Guide: SQL vs NoSQL Decision Framework

9/18/2025

Database selection impacts performance, scalability, and development complexity.

## SQL Databases PostgreSQL: Best overall RDBMS MySQL: Web applications SQL Server: Microsoft ecosystem Oracle: Enterprise legacy

## NoSQL Options MongoDB: Document store DynamoDB: Serverless Cassandra: Time series Redis: Caching Neo4j: Graph data

## Decision Framework - Data structure requirements - Consistency needs - Scale requirements - Query complexity - Team expertise

## Hybrid Approach Many applications benefit from polyglot persistence - using multiple databases for different needs.

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