DBMS > Apache IoTDB vs. H2 vs. Weaviate

System Properties Comparison Apache IoTDB vs. H2 vs. Weaviate

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Editorial information provided by DB-Engines

Name

Description

An IoT native database with high performance for data management and analysis, deployable on the edge and the cloud and integrated with Hadoop, Spark and Flink

Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.

A cloud-native, realtime vector search engine integrating scalable machine learning models

Primary database model

Time Series DBMS

Relational DBMS

Search engine

Secondary database models

Spatial DBMS

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

Score	0.36
Rank	#264	Overall
	#21	Time Series DBMS

Score	9.78
Rank	#51	Overall
	#31	Relational DBMS

Score	0.13
Rank	#306	Overall
	#19	Search engines

Website

iotdb.apache.org

www.h2database.com

github.com/semi-technologies/weaviate
weaviate.io

Technical documentation

www.h2database.com/html/main.html

weaviate.io/developers/weaviate/current

Developer

Apache Software Foundation

Thomas Mueller

SeMI Technologies B.V.

Initial release

2018

2005

2017

Current release

2.1.210, January 2022

1.0.3, January 2021

License

Commercial or Open Source

Open Source

Apache Version 2.0

Open Source

dual-licence (Mozilla public license, Eclipse public license)

Open Source

commercial license available with Weaviate Enterprise

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

Java

Server operating systems

All OS with a Java VM (>= 1.8)

All OS with a Java VM

Data scheme

yes

yes, maps to GraphQL interface

Typing

predefined data types such as float or date

yes

string, int, float, geo point, date, cross reference, fuzzy references

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

all data objects are indexed in a semantic vector space (the Contextionary), all primitive fields are indexed

SQL

Support of SQL

SQL-like query language

yes

GraphQL is used as query language

APIs and other access methods

JDBC
Native API

JDBC
ODBC

GraphQL query language
RESTful HTTP/JSON API

Supported programming languages

Java

Server-side scripts

Stored procedures

yes

Java Stored Procedures and User-Defined Functions

Triggers

yes

Partitioning methods

Methods for storing different data on different nodes

none

Sharding

Replication methods

Methods for redundantly storing data on multiple nodes

With clustering: 2 database servers on different computers operate on identical copies of a database

yes

MapReduce

Offers an API for user-defined Map/Reduce methods

Integration with Hadoop and Spark

Consistency concepts

Methods to ensure consistency in a distributed system

Eventual Consistency
Strong Consistency with Raft

Immediate Consistency

Eventual 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

yes, multi-version concurrency control (MVCC)

yes

Durability

Support for making data persistent

yes

In-memory capabilities

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

yes

User concepts

Access control

yes

fine grained access rights according to SQL-standard

OpenID Connect Discovery

More information provided by the system vendor

Specific characteristics

Apache IoTDB (Internet of Things Database) is a time series data management system...
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Competitive advantages

Low Cost and High Performance Tens of million points write throughput High compression...
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Typical application scenarios

IoT / IIoT End-Edge-Cloud Collaboration Real-Time and Historian Time Series Analytics
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As a stand-alone vector search engine, or use one of the many modules (transformers,...
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Key customers

Over 200 customers worldwide, including Bosch, Siemens, Komat'su, Alibaba, etc.
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A ll companies that have data.
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Market metrics

185+ contributors and 10,000+ times monthly clones on GitHub Rank 7 by commits among...
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Licensing and pricing models

Open Source: Apache License v2.0 Pricing for commercial-/cloud-/edge-edition provided...
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Weaviate is open-source, and free to use. We also offer Fully managed Weaviate on...
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