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DBMS > H2 vs. KairosDB vs. Rockset vs. XTDB

System Properties Comparison H2 vs. KairosDB vs. Rockset vs. XTDB

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Editorial information provided by DB-Engines
NameH2  Xexclude from comparisonKairosDB  Xexclude from comparisonRockset  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionFull-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 scalable, reliable search and analytics service in the cloud, built on RocksDBA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelRelational DBMSTime Series DBMSDocument storeDocument store
Secondary database modelsSpatial DBMSRelational DBMS
Search engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score8.33
Rank#46  Overall
#30  Relational DBMS
Score0.67
Rank#233  Overall
#20  Time Series DBMS
Score0.82
Rank#212  Overall
#36  Document stores
Score0.18
Rank#332  Overall
#46  Document stores
Websitewww.h2database.comgithub.com/­kairosdb/­kairosdbrockset.comgithub.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationwww.h2database.com/­html/­main.htmlkairosdb.github.iodocs.rockset.comwww.xtdb.com/­docs
DeveloperThomas MuellerRocksetJuxt Ltd.
Initial release2005201320192019
Current release2.2.220, July 20231.2.2, November 20181.19, September 2021
License infoCommercial or Open SourceOpen Source infodual-licence (Mozilla public license, Eclipse public license)Open Source infoApache 2.0commercialOpen Source infoMIT License
Cloud-based only infoOnly available as a cloud servicenonoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJavaC++Clojure
Server operating systemsAll OS with a Java VMLinux
OS X
Windows
hostedAll OS with a Java 8 (and higher) VM
Linux
Data schemeyesschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesyesdynamic typingyes, extensible-data-notation format
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 infoingestion from XML files supportedno
Secondary indexesyesnoall fields are automatically indexedyes
SQL infoSupport of SQLyesnoRead-only SQL queries, including JOINslimited SQL, making use of Apache Calcite
APIs and other access methodsJDBC
ODBC
Graphite protocol
HTTP REST
Telnet API
HTTP RESTHTTP REST
JDBC
Supported programming languagesJavaJava
JavaScript infoNode.js
PHP
Python
Go
Java
JavaScript (Node.js)
Python
Clojure
Java
Server-side scripts infoStored proceduresJava Stored Procedures and User-Defined Functionsnonono
Triggersyesnonono
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infobased on CassandraAutomatic shardingnone
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 Cassandrayesyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Eventual Consistency
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnonoACID
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)yesyesyes
Durability infoSupport for making data persistentyesyesyesyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlfine grained access rights according to SQL-standardsimple password-based access controlAccess rights for users and organizations can be defined via Rockset console

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More resources
H2KairosDBRocksetXTDB infoformerly named Crux
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