What is Microsoft SQL Server?
Microsoft SQL Server 2025 is an enterprise database with built-in AI capabilities and advanced security for accelerating AI applications and modernizing data platforms.
What Microsoft SQL Server does
The capabilities that matter for relational databases, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- SQL model
- Full SQL
- ACID transactions
- Full
- Highest isolation level
- Serializable
- Consistency
- Strong
- Horizontal scale
- -
- Replication
- -
- Automatic failover / HA
- ✓
- Deployment
- Self-hosted
- Serverless / scale-to-zero
- -
- Wire compatibility
- None
- Extensions / plugins / UDFs
- ✓
- Licence class
- Proprietary
- JSON / document support
- ✓
- Geo / spatial
- -
Platform & deployment
Independently observed- Cloud / SaaS
- Hybrid
- On-premise
Integrations (3)
Independently observed- LangChain
- Semantic Kernel
- Entity Framework Core
Microsoft SQL Server alternatives
Other relational databases we track, ranked by the same independent score.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Microsoft SQL Server, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 58 | 0.13 | 7.5 | ✓ |
| Integrations | 17 | 0.06 | 1.1 | ✓ |
| Price Level | 0 | 0.04 | 0.0 | - |
| Reliability | 0 | 0.08 | 0.0 | - |
| Security Posture | 5 | 0.14 | 0.0 | - |
| Pricing Transparency | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | {"isolation":"serializable","sql_model":"full_sql","deployment":"self_hosted","consistency":"strong","extensibility":true,"json_document":true,"license_class":"proprietary","acid_transactions":"full","automatic_failover":true,"wire_compatibility":"none"} | mediumsource · 2026-08-05 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 3 | mediumsource · 2026-08-05 · 60% |
Pricing
| Attribute | Value | Evidence |
|---|---|---|
| Model | commercial | mediumsource · 2026-08-05 · 60% |
Security
| Attribute | Value | Evidence |
|---|---|---|
| Disclosure policy | Yes | mediumsource · 2026-08-05 · 60% |