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DBMS > H2 vs. RocksDB vs. XTDB

System Properties Comparison H2 vs. RocksDB vs. XTDB

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Editorial information provided by DB-Engines
NameH2  Xexclude from comparisonRocksDB  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.Embeddable persistent key-value store optimized for fast storage (flash and RAM)A general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelRelational DBMSKey-value storeDocument store
Secondary database modelsSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score9.72
Rank#49  Overall
#31  Relational DBMS
Score4.26
Rank#89  Overall
#16  Key-value stores
Score0.02
Rank#346  Overall
#46  Document stores
Websitewww.h2database.comrocksdb.orggithub.com/­xtdb/­xtdb
xtdb.com
Technical documentationwww.h2database.com/­html/­main.htmlgithub.com/­facebook/­rocksdb/­wikixtdb.com/­docs
DeveloperThomas MuellerFacebook, Inc.Juxt Ltd.
Initial release200520132019
Current release2.1.210, January 20227.3.1, June 20221.19, September 2021
License infoCommercial or Open SourceOpen Source infodual-licence (Mozilla public license, Eclipse public license)Open Source infoBSDOpen Source infoMIT License
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC++Clojure
Server operating systemsAll OS with a Java VMLinuxAll OS with a Java 8 (and higher) VM
Linux
Data schemeyesschema-freeschema-free
Typing infopredefined data types such as float or dateyesnoyes, 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
Secondary indexesyesnoyes
SQL infoSupport of SQLyesnolimited SQL, making use of Apache Calcite
APIs and other access methodsJDBC
ODBC
C++ API
Java API
HTTP REST
JDBC
Supported programming languagesJavaC
C++
Go
Java
Perl
Python
Ruby
Clojure
Java
Server-side scripts infoStored proceduresJava Stored Procedures and User-Defined Functionsnono
Triggersyesnono
Partitioning methods infoMethods for storing different data on different nodesnonenonenone
Replication methods infoMethods for redundantly storing data on multiple nodesWith clustering: 2 database servers on different computers operate on identical copies of a databasenoneyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integrityyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDyesACID
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)yesyes
Durability infoSupport for making data persistentyesyesyes, 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.yesyes
User concepts infoAccess controlfine grained access rights according to SQL-standardno

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3rd partiesSpeedb: A high performance RocksDB-compliant key-value store optimized for write-intensive workloads.
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More resources
H2RocksDBXTDB infoformerly named Crux
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