Choosing Between MySQL, PostgreSQL and SQL Server
When a relational database is the right call, the next question is which one. MySQL, PostgreSQL and Microsoft SQL Server are all capable, mature choices, and the best fit depends on your features, team and budget rather than any single 'winner'.
This article gives an honest, plain comparison to inform the recommendation in your proposal.
The Short Version
PostgreSQL is our frequent default for new builds thanks to its rich features and standards compliance. MySQL is lightweight and ubiquitous, especially with WordPress. SQL Server suits organisations already invested in Microsoft tooling.
| Database | Strengths | Typical fit |
|---|---|---|
| PostgreSQL | Advanced features, JSON, standards | New bespoke applications |
| MySQL | Simple, fast, everywhere | WordPress and common web stacks |
| SQL Server | Microsoft integration, tooling | Windows / .NET estates |
Frequently Asked Questions
Can we switch later?
It is possible but involves real migration effort, so we choose deliberately up front to avoid a costly change.
Are licensing costs a factor?
Yes — PostgreSQL and MySQL are open source, while SQL Server carries licence fees we factor into the decision.
If you need a hand with any of this, your Progressive Robot delivery team is ready to help. Raise a ticket from the Support area of your client portal or speak to your account manager and we will guide you through the next steps.