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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