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InterSystems IRIS vs YottaDB

InterSystems IRIS: Multi-model data platform (SQL, objects, globals, vectors) with built-in interoperability, big in healthcare. YottaDB: Open-source MUMPS/M hierarchical key-value database forked from GT.M, with SQL via Octo.

key differences

  • InterSystems IRIS is primarily a relational database; YottaDB is hierarchical.
  • Licensing: InterSystems IRIS is proprietary (Proprietary commercial license); YottaDB is open source (copyleft) (GNU AGPL v3.0).
  • InterSystems IRIS is built for larger datasets (≤ 1 PB) than YottaDB (≤ 10 TB).
  • Horizontal scaling is native in InterSystems IRIS and manual in YottaDB.
  • Only InterSystems IRIS has joins, secondary indexes, full-text search, vector search, json.
  • YottaDB can run embedded in your application process.

choose intersystems-iris for

  • +Electronic health records and hospital information systems
  • +Health information exchanges and FHIR servers
  • +High-throughput financial transaction processing
  • +Supply-chain and logistics platforms needing integration plus analytics

best at · OLTP, HTAP, Real-time analytics

choose yottadb for

  • +VistA and other M-based EHR systems
  • +Core-banking platforms built on M
  • +Migrating GT.M or Caché applications to open source

best at · OLTP

InterSystems IRISMulti-model data platform (SQL, objects, globals, vectors) with built-in interoperability, big in healthcare.
YottaDBOpen-source MUMPS/M hierarchical key-value database forked from GT.M, with SQL via Octo.
overview
Primary model
Relational
Hierarchical
Also supports
Object, Document, Key-Value, Multivalue (Pick), Vector
Key-Value
Type
Database engine
Database engine
Status
Active
Active
Developer
InterSystems Corporation
YottaDB LLC
First release
2018
2017
Latest version
2026.2 (CD) (Jul 22, 2026)
r2.06 (Apr 27, 2026)
License
ProprietaryProprietary commercial license
Open source (copyleft)GNU AGPL v3.0
Free tier
✓
✓
popularity
WhichDB Score
13.3
7.9
Rank
#253
#333
GitHub stars
–
93
Stack Overflow questions
42
7
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
Manual
Multi-region
Read replicas
Read replicas
ACID
Full
Full
Consistency
Strong
Strong
Schema
Flexible
Schemaless
Architecture
Client server, Primary replica, Distributed
Single node, Primary replica, Embedded
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
—
—
Embedded
—
✓
Edge
—
—
Clouds
AWS, Azure, Google Cloud
–
capabilities
Transactions
✓
✓
Joins
✓
—
Secondary indexes
✓
—
Full-text search
✓
—
Vector search
✓
—
Geospatial
—
—
JSON
✓
—
Change data capture
—
—
Triggers
✓
✓
Stored procedures
✓
—
Materialized views
—
—
TTL / expiry
—
—
Pub/Sub
—
—
Columnar storage
✓
—
In-memory
—
—
Durable persistence
✓
✓
Compression
—
—
Encryption at rest
✓
✓
Role-based access
✓
—
Time travel
—
—
Branching
—
—
Online schema changes
—
—
Streaming ingest
—
—
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL, ObjectScript, Python (Embedded)
M (MUMPS), SQL (Octo)
Client languages
Java, C#, Python, JavaScript, C++
M, C, Go, Rust, Python, Node.js, Perl, Lua
Best for
OLTP, HTAP, Real-time analytics, Vector search
OLTP
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InterSystems IRIS vs YottaDB: FAQ

What is the difference between InterSystems IRIS and YottaDB?

InterSystems IRIS: Multi-model data platform (SQL, objects, globals, vectors) with built-in interoperability, big in healthcare. YottaDB: Open-source MUMPS/M hierarchical key-value database forked from GT.M, with SQL via Octo. InterSystems IRIS is primarily a relational database; YottaDB is hierarchical. Licensing: InterSystems IRIS is proprietary (Proprietary commercial license); YottaDB is open source (copyleft) (GNU AGPL v3.0). InterSystems IRIS is built for larger datasets (≤ 1 PB) than YottaDB (≤ 10 TB).

When should I choose InterSystems IRIS over YottaDB?

Choose InterSystems IRIS for electronic health records and hospital information systems; health information exchanges and FHIR servers; and high-throughput financial transaction processing. Choose YottaDB for VistA and other M-based EHR systems; core-banking platforms built on M; and migrating GT.M or Caché applications to open source.

Is InterSystems IRIS or YottaDB more popular?

InterSystems IRIS ranks #253 on the WhichDB Score (13.3/100) and YottaDB ranks #333 (7.9/100). Popularity is not fit: check the requirements that matter for your project.

Are InterSystems IRIS and YottaDB open source?

No. InterSystems IRIS is proprietary, closed-source software. Yes. YottaDB is open source. License: GNU AGPL v3.0.