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Software AG Adabas vs UDS/SQL

Software AG Adabas: Inverted-list, multi-value mainframe database paired with Natural, run as a standalone Software AG business. UDS/SQL: Fujitsu BS2000 mainframe DBMS combining a CODASYL network model with SQL on the same data.

key differences

  • Software AG Adabas is primarily a multivalue (Pick) database; UDS/SQL is network / navigational.
  • Software AG Adabas is built for larger datasets (≤ 1 PB) than UDS/SQL (≤ 10 TB).
  • Horizontal scaling is addon in Software AG Adabas and none in UDS/SQL.
  • Only Software AG Adabas has change data capture, compression, encryption at rest.
  • Only UDS/SQL has joins.

choose adabas for

  • +Government tax and social-security systems
  • +Banking and insurance back ends on IBM Z
  • +Rehosting Adabas/Natural applications to Linux

best at · OLTP

choose uds-sql for

  • +Core banking, insurance and public-sector systems on BS2000
  • +Maintaining CODASYL-era COBOL applications

best at · OLTP

Software AG AdabasInverted-list, multi-value mainframe database paired with Natural, run as a standalone Software AG business.
UDS/SQLFujitsu BS2000 mainframe DBMS combining a CODASYL network model with SQL on the same data.
overview
Primary model
Multivalue (Pick)
Network / Navigational
Also supports
–
Relational
Type
Database engine
Database engine
Status
Active
Active
Developer
Software AG (Adabas & Natural business, owned by Silver Lake)
Fujitsu (originally Siemens)
First release
1971
1976
Latest version
8.6.1 (z/OS) (Oct 2025)
V2.9C (2026)
License
ProprietaryProprietary commercial license
ProprietaryCommercial (Fujitsu BS2000 software)
Free tier
—
—
popularity
WhichDB Score
8.4
0.0
Rank
#325
#834
GitHub stars
–
–
Stack Overflow questions
7
–
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Addon
None
Multi-region
Read replicas
None
ACID
Full
Full
Consistency
Strong
Strong
Schema
Flexible
Strict
Architecture
Client server, Shared storage, Primary replica
Client server, Distributed
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
–
–
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
Natural, Adabas direct call interface, SQL (via Adabas SQL Gateway)
COBOL DML, CALL DML, SQL
Client languages
Natural, COBOL, Java, C, Assembly
COBOL
Best for
OLTP
OLTP
Add more to this comparisonNot sure either fits? Try smart match

Software AG Adabas vs UDS/SQL: FAQ

What is the difference between Software AG Adabas and UDS/SQL?

Software AG Adabas: Inverted-list, multi-value mainframe database paired with Natural, run as a standalone Software AG business. UDS/SQL: Fujitsu BS2000 mainframe DBMS combining a CODASYL network model with SQL on the same data. Software AG Adabas is primarily a multivalue (Pick) database; UDS/SQL is network / navigational. Software AG Adabas is built for larger datasets (≤ 1 PB) than UDS/SQL (≤ 10 TB). Horizontal scaling is addon in Software AG Adabas and none in UDS/SQL.

When should I choose Software AG Adabas over UDS/SQL?

Choose Software AG Adabas for government tax and social-security systems; banking and insurance back ends on IBM Z; and rehosting Adabas/Natural applications to Linux. Choose UDS/SQL for core banking, insurance and public-sector systems on BS2000; and maintaining CODASYL-era COBOL applications.

Is Software AG Adabas or UDS/SQL more popular?

Software AG Adabas ranks #325 on the WhichDB Score (8.4/100) and UDS/SQL ranks #834 (0.0/100). Popularity is not fit: check the requirements that matter for your project.

Are Software AG Adabas and UDS/SQL open source?

No. Software AG Adabas is proprietary, closed-source software. No. UDS/SQL is proprietary, closed-source software. License: Commercial (Fujitsu BS2000 software).