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DBMS > GreptimeDB vs. H2 vs. KairosDB vs. OushuDB vs. RavenDB

System Properties Comparison GreptimeDB vs. H2 vs. KairosDB vs. OushuDB vs. RavenDB

Editorial information provided by DB-Engines
NameGreptimeDB  Xexclude from comparisonH2  Xexclude from comparisonKairosDB  Xexclude from comparisonOushuDB  Xexclude from comparisonRavenDB  Xexclude from comparison
DescriptionAn open source Time Series DBMS built for increased scalability, high performance and efficiencyFull-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.Distributed Time Series DBMS based on Cassandra or H2A data warehouse powered by Apache HAWQ supporting descriptive analysis and advanced machine learningOpen Source Operational and Transactional Enterprise NoSQL Document Database
Primary database modelTime Series DBMSRelational DBMSTime Series DBMSRelational DBMSDocument store
Secondary database modelsSpatial DBMSGraph DBMS
Spatial DBMS
Time Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.06
Rank#352  Overall
#33  Time Series DBMS
Score8.13
Rank#49  Overall
#31  Relational DBMS
Score0.62
Rank#239  Overall
#20  Time Series DBMS
Score0.04
Rank#363  Overall
#154  Relational DBMS
Score2.92
Rank#101  Overall
#18  Document stores
Websitegreptime.comwww.h2database.comgithub.com/­kairosdb/­kairosdbwww.oushu.com/­product/­oushuDBravendb.net
Technical documentationdocs.greptime.comwww.h2database.com/­html/­main.htmlkairosdb.github.iowww.oushu.com/­documentationravendb.net/­docs
DeveloperGreptime Inc.Thomas MuellerOushuHibernating Rhinos
Initial release2022200520132010
Current release2.2.220, July 20231.2.2, November 20184.0.1, August 20205.4, July 2022
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open Source infodual-licence (Mozilla public license, Eclipse public license)Open Source infoApache 2.0commercialOpen Source infoAGPL version 3, commercial license available
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageRustJavaJavaC#
Server operating systemsAndroid
Docker
FreeBSD
Linux
macOS
Windows
All OS with a Java VMLinux
OS X
Windows
LinuxLinux
macOS
Raspberry Pi
Windows
Data schemeschema-free, schema definition possibleyesschema-freeyesschema-free
Typing infopredefined data types such as float or dateyesyesyesyesno
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nonono
Secondary indexesyesyesnoyesyes
SQL infoSupport of SQLyesyesnoFull-featured ANSI SQL supportSQL-like query language (RQL)
APIs and other access methodsgRPC
HTTP API
JDBC
JDBC
ODBC
Graphite protocol
HTTP REST
Telnet API
JDBC
ODBC
.NET Client API
F# Client API
Go Client API
Java Client API
NodeJS Client API
PHP Client API
Python Client API
RESTful HTTP API
Supported programming languagesC++
Erlang
Go
Java
JavaScript
JavaJava
JavaScript infoNode.js
PHP
Python
C
C++
.Net
C#
F#
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
Server-side scripts infoStored proceduresPythonJava Stored Procedures and User-Defined Functionsnoyesyes
Triggersyesnoyesyes
Partitioning methods infoMethods for storing different data on different nodesShardingnoneSharding infobased on CassandrayesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesWith clustering: 2 database servers on different computers operate on identical copies of a databaseselectable replication factor infobased on CassandraMulti-source replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononoHadoop integrationyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Default ACID transactions on the local node (eventually consistent across the cluster). Atomic operations with cluster-wide ACID transactions. Eventual consistency for indexes and full-text search indexes.
Foreign keys infoReferential integrityyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACIDACID, Cluster-wide transaction available
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)yesyesyes
Durability infoSupport for making data persistentyesyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlSimple rights management via user accountsfine grained access rights according to SQL-standardsimple password-based access controlKerberos, SSL and role based accessAuthorization levels configured per client per database
More information provided by the system vendor
GreptimeDBH2KairosDBOushuDBRavenDB
Specific characteristicsGreptimeDB is a SQL & Python-enabled timeseries database system built from scratch...
» more
Competitive advantages- Inherits advantages of Rust, such as excellent performance, memory safe, resource...
» more
Typical application scenariosFor IoT industries, GreptimeDB can seamless integrate with message queues and other...
» more
Key customersGreptime's clients span multiple sectors including IoT, connected vehicles, and energy...
» more
Market metricsGreptimeDB has garnered global recognition by topping GitHub trends following its...
» more
Licensing and pricing modelsGreptimeDB: open source, distributed, cloud-native TSDB; supports Hybrid Time-series...
» more

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More resources
GreptimeDBH2KairosDBOushuDBRavenDB
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