"MongoDB vs. PostgreSQL: Which Database Should Your Startup Choose?"

This comparison helps founders choose between document and relational paradigms based on data shape, transactions, and analytics needs.

When to choose MongoDB

• Flexible schemas, rapid iteration, and JSON document storage.

When to choose PostgreSQL

• Complex relations, strong transactional guarantees, and rich analytics functions.

Hybrid approaches

• Use both: the right data model can live in specialized stores (e.g., events in a OLAP store, transactional data in Postgres).

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