Datomic vs TerminusDB
Datomic: Immutable Datalog database from Nubank where every fact is timestamped and queries run in the app process. TerminusDB: Git-for-data document and knowledge-graph database with branches, diffs and time travel.
key differences
- Datomic is primarily a relational database; TerminusDB is graph.
- Datomic is built for larger datasets (≤ 10 TB) than TerminusDB (≤ 100 GB).
- Only Datomic has secondary indexes, full-text search, change data capture.
- Only TerminusDB has json, compression, role-based access, branching, online schema changes.
- Datomic can run embedded in your application process.
choose datomic for
- +Financial and banking domain models needing auditability
- +Systems that must answer what was known at a given time
- +Complex domain graphs in Clojure services
best at · OLTP, Event sourcing, Ledger
choose terminusdb for
- +Collaborative curation of reference or master data
- +Auditable knowledge graphs with review workflows
- +Versioned configuration and product data
- +Data products that need reproducible snapshots
best at · Knowledge graph, Content, Metadata
Datomic vs TerminusDB: FAQ
What is the difference between Datomic and TerminusDB?
Datomic: Immutable Datalog database from Nubank where every fact is timestamped and queries run in the app process. TerminusDB: Git-for-data document and knowledge-graph database with branches, diffs and time travel. Datomic is primarily a relational database; TerminusDB is graph. Datomic is built for larger datasets (≤ 10 TB) than TerminusDB (≤ 100 GB). Only Datomic has secondary indexes, full-text search, change data capture.
When should I choose Datomic over TerminusDB?
Choose Datomic for financial and banking domain models needing auditability; systems that must answer what was known at a given time; and complex domain graphs in Clojure services. Choose TerminusDB for collaborative curation of reference or master data; auditable knowledge graphs with review workflows; and versioned configuration and product data.
Is Datomic or TerminusDB more popular?
TerminusDB ranks #146 on the WhichDB Score (21.0/100) and Datomic ranks #225 (14.9/100). Popularity is not fit: check the requirements that matter for your project.
Are Datomic and TerminusDB open source?
Yes. Datomic is open source. License: Apache-2.0 (binaries only; source not published). Yes. TerminusDB is open source. License: Apache License 2.0.