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DBMS > Crux vs. H2

System Properties Comparison Crux vs. H2

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Editorial information provided by DB-Engines
NameCrux  Xexclude from comparisonH2  Xexclude from comparison
DescriptionCrux is a general purpose database with bitemporal SQL and Datalog and graph queriesFull-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.
Primary database modelDocument storeRelational DBMS
Secondary database modelsSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.04
Rank#333  Overall
#45  Document stores
Score9.69
Rank#48  Overall
#30  Relational DBMS
Websitegithub.com/­juxt/­crux
opencrux.com
www.h2database.com
Technical documentationopencrux.com/­reference/­installation.htmlwww.h2database.com/­html/­main.html
DeveloperJuxt Ltd.Thomas Mueller
Initial release20192005
Current release1.12.1, September 20201.4.200, October 2019
License infoCommercial or Open SourceOpen Source infoMIT LicenseOpen Source infodual-licence (Mozilla public license, Eclipse public license)
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageClojureJava
Server operating systemsAll OS with a Java 8 (and higher) VM
Linux
All OS with a Java VM
Data schemeschema-freeyes
Typing infopredefined data types such as float or dateyes, extensible-data-notation formatyes
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.nono
Secondary indexesyesyes
SQL infoSupport of SQLlimited SQL, making use of Apache Calciteyes
APIs and other access methodsHTTP REST
JDBC
JDBC
ODBC
Supported programming languagesClojure
Java
Java
Server-side scripts infoStored proceduresnoJava Stored Procedures and User-Defined Functions
Triggersnoyes
Partitioning methods infoMethods for storing different data on different nodesnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesyes, each node contains all dataWith clustering: 2 database servers on different computers operate on identical copies of a database
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integritynoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)
Durability infoSupport for making data persistentyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDByes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlfine grained access rights according to SQL-standard

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