DBMS > Immudb vs. TerminusDB vs. XTDB

System Properties Comparison Immudb vs. TerminusDB vs. XTDB

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Editorial information provided by DB-Engines

Name

Description

An open source immutable (append-only) database with cryptographic verification which makes it tamper-resistant and fully auditable.

Scalable Graph Database platform making enterprise data available by exploiting inferred entities and relationships

A general purpose database with bitemporal SQL and Datalog and graph queries

Primary database model

Key-value store

Graph DBMS

Document store

Secondary database models

Relational DBMS

Document store
RDF store

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	0.25
Rank	#292	Overall
	#42	Key-value stores

Score	0.13
Rank	#336	Overall
	#32	Graph DBMS

Score	0.20
Rank	#307	Overall
	#46	Document stores

Website

github.com/codenotary/immudb
immudb.io

terminusdb.com

github.com/xtdb/xtdb
www.xtdb.com

Technical documentation

docs.immudb.io

terminusdb.github.io/terminusdb/#

www.xtdb.com/docs

Developer

Codenotary

DataChemist Ltd.

Juxt Ltd.

Initial release

2020

2018

2019

Current release

1.2.3, April 2022

11.0.0, January 2023

1.19, September 2021

License

Commercial or Open Source

Open Source

Apache Version 2.0

Open Source

GPL V3

Open Source

MIT License

Cloud-based only

Only available as a cloud service

DBaaS offerings (sponsored links)

Database as a Service

Providers of DBaaS offerings, please contact us to be listed.

Implementation language

Prolog, Rust

Clojure

Server operating systems

BSD
Linux
macOS
Solaris
Windows
z/OS

Linux

All OS with a Java 8 (and higher) VM
Linux

Data scheme

schema-free

yes

schema-free

Typing

predefined data types such as float or date

yes

yes, extensible-data-notation format

XML support

Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.

Secondary indexes

yes

SQL

Support of SQL

SQL-like syntax

SQL-like query language (WOQL)

limited SQL, making use of Apache Calcite

APIs and other access methods

gRPC protocol
PostgreSQL wire protocol

OWL
RESTful HTTP API
WOQL (Web Object Query Language)

HTTP REST
JDBC

Supported programming languages

.Net
Go
Java
JavaScript (Node.js)
Python

JavaScript
Python

Clojure
Java

Server-side scripts

Stored procedures

yes

Triggers

yes

Partitioning methods

Methods for storing different data on different nodes

Sharding

Graph Partitioning

none

Replication methods

Methods for redundantly storing data on multiple nodes

Journaling Streams

yes, each node contains all data

MapReduce

Offers an API for user-defined Map/Reduce methods

Consistency concepts

Methods to ensure consistency in a distributed system

Immediate Consistency

Foreign keys

Referential integrity

yes

Transaction concepts

Support to ensure data integrity after non-atomic manipulations of data

ACID

Concurrency

Support for concurrent manipulation of data

yes

Durability

Support for making data persistent

yes

in-memory journaling

yes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB

In-memory capabilities

Is there an option to define some or all structures to be held in-memory only.

User concepts

Access control

Role-based access control

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More resources

Recent citations in the news

immudb Gains Market Momentum as the Leading Immutable Database for Secure and Tamper-Proof Data Storage
11 March 2025, Business Wire

A Step by Step Guide to immudb — the open source immutable database
18 May 2020, HackerNoon

Immudb: Open-source database, built on a zero trust model
17 December 2021, Help Net Security

Codenotary brings its immutable database to the cloud
21 June 2023, TechCrunch

The Alpha and Omega of software supply chain security
4 February 2022, ZDNET

provided by Google News

Dublin-based data collaboration tool TerminusDB raises €3.6 million in seed round
15 March 2021, Tech.eu

provided by Google News

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