Azure SQL Database
7.7#5 in relational databasesFree planFree planAndroidiOSWebAPI
VisitAzure SQL Database vs HSQLDB
What both publish
| Fact | Azure SQL Database | HSQLDB |
|---|---|---|
| Documentation depth | Microsoft Learn provides conceptual guidance, quickstarts, tutorials, API references, resource-limit tables, code samples and troubleshooting material. | The project publishes HTML, PDF and text guides, JavaDoc for public classes, utilities documentation, examples, tests and SQL scripts. |
| Free plan | Yes | Yes |
| Integrations | Azure SQL Database can connect to Azure services such as Azure Functions and replicate SQL data into Microsoft Fabric for near-real-time querying and analysis. | The project documents JDBC and ODBC connectivity and integration with OpenOffice.org and LibreOffice. |
| Rating on G2 | 4.5 out of 5 from 242 reviews | 4.0 out of 5 from 22 reviews. |
Azure SQL Database plans
- Free offerFree
- Azure SQL Database free offerFree
- Azure SQL Database free tierFree
- Azure SQL Database pay-as-you-go—
- Pay as you go—
HSQLDB plans
- Developer subscription$100 a year
- Basic Corporate subscription—
- Premier Corporate subscription$2,500 a year
- HSQLDB softwareFree
- HSQLDBFree
- Developer SupportWare$100 a year
Pick Azure SQL Database if…
It suits teams building modern applications or working with mission-critical workloads, including projects requiring AI-ready architectures. The free tier may suit users able to stay within its per-database monthly allowances or accept the stated overage behavior.
Pick HSQLDB if…
HSQLDB may suit developers and organizations seeking a self-hosted Java database with embedded or server operation. Its listed tools and integrations may also be relevant to teams using the named Java and database projects.