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DBMS > H2 vs. LokiJS vs. Oracle Coherence vs. ReductStore

System Properties Comparison H2 vs. LokiJS vs. Oracle Coherence vs. ReductStore

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Editorial information provided by DB-Engines
NameH2  Xexclude from comparisonLokiJS  Xexclude from comparisonOracle Coherence  Xexclude from comparisonReductStore  Xexclude from comparison
DescriptionFull-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.In-memory JavaScript DBMSOracles in-memory data grid solutionDesigned to manage unstructured time-series data efficiently, providing unique features such as storing time-stamped blobs with labels, customizable data retention policies, and a straightforward FIFO quota system.
Primary database modelRelational DBMSDocument storeKey-value storeTime Series DBMS
Secondary database modelsSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.57
Rank#47  Overall
#30  Relational DBMS
Score0.44
Rank#256  Overall
#40  Document stores
Score1.90
Rank#127  Overall
#21  Key-value stores
Score0.00
Rank#385  Overall
#40  Time Series DBMS
Websitewww.h2database.comgithub.com/­techfort/­LokiJSwww.oracle.com/­java/­coherencegithub.com/­reductstore
www.reduct.store
Technical documentationwww.h2database.com/­html/­main.htmltechfort.github.io/­LokiJSdocs.oracle.com/­en/­middleware/­standalone/­coherencewww.reduct.store/­docs
DeveloperThomas MuellerOracleReductStore LLC
Initial release2005201420072023
Current release2.2.220, July 202314.1, August 20231.9, March 2024
License infoCommercial or Open SourceOpen Source infodual-licence (Mozilla public license, Eclipse public license)Open SourcecommercialOpen Source infoBusiness Source License 1.1
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJavaScriptJavaC++, Rust
Server operating systemsAll OS with a Java VMserver-less, requires a JavaScript environment (browser, Node.js)All OS with a Java VMDocker
Linux
macOS
Windows
Data schemeyesschema-freeschema-free
Typing infopredefined data types such as float or dateyesnoyes
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 indexesyesyes infovia viewsno
SQL infoSupport of SQLyesnono
APIs and other access methodsJDBC
ODBC
JavaScript APIJCache
JPA
RESTful HTTP API
HTTP API
Supported programming languagesJavaJavaScript.Net
C++
Java
C++
JavaScript (Node.js)
Python
Rust
Server-side scripts infoStored proceduresJava Stored Procedures and User-Defined FunctionsView functions in JavaScriptno
Triggersyesyesyes infoLive Events
Partitioning methods infoMethods for storing different data on different nodesnonenoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesWith clustering: 2 database servers on different computers operate on identical copies of a databasenoneyes, with selectable consistency level
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencynoneEventual Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDno infoatomic operations within a single collection possibleconfigurable
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)yes
Durability infoSupport for making data persistentyesyes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.yes infooptionally
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes
User concepts infoAccess controlfine grained access rights according to SQL-standardnoauthentification to access the cache via certificates or http basic authentication

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More resources
H2LokiJSOracle CoherenceReductStore
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