PostgreSQL vs MySQL vs NoSQL: The Complete Guide to Understanding Modern Databases

Short summary

PostgreSQL, MySQL, and NoSQL serve different needs: PostgreSQL excels at complex queries and data integrity for financial systems; MySQL dominates traditional web apps; NoSQL enables horizontal scaling for massive datasets. Modern architectures combine multiple database types (polyglot persistence) optimized for each use case.

• •PostgreSQL for strict consistency and complex analytics; MySQL for traditional web applications
• •NoSQL trades consistency for horizontal scalability across distributed systems
• •Polyglot persistence combines databases by use case rather than choosing one database type

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