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DBMS > HyperSQL vs. OpenMLDB vs. Oracle Coherence vs. Realm

System Properties Comparison HyperSQL vs. OpenMLDB vs. Oracle Coherence vs. Realm

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Editorial information provided by DB-Engines
NameHyperSQL infoalso known as HSQLDB  Xexclude from comparisonOpenMLDB  Xexclude from comparisonOracle Coherence  Xexclude from comparisonRealm  Xexclude from comparison
DescriptionMultithreaded, transactional RDBMS written in Java infoalso known as HSQLDBAn open-source machine learning database that provides a feature platform for training and inferenceOracles in-memory data grid solutionA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core Data
Primary database modelRelational DBMSTime Series DBMSKey-value storeDocument store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.49
Rank#87  Overall
#47  Relational DBMS
Score0.02
Rank#367  Overall
#37  Time Series DBMS
Score1.92
Rank#130  Overall
#22  Key-value stores
Score7.60
Rank#52  Overall
#9  Document stores
Websitehsqldb.orgopenmldb.aiwww.oracle.com/­java/­coherencerealm.io
Technical documentationhsqldb.org/­web/­hsqlDocsFrame.htmlopenmldb.ai/­docs/­zh/­maindocs.oracle.com/­en/­middleware/­standalone/­coherencerealm.io/­docs
Developer4 Paradigm Inc.OracleRealm, acquired by MongoDB in May 2019
Initial release2001202020072014
Current release2.7.2, June 20232024-2 February 202414.1, August 2023
License infoCommercial or Open SourceOpen Source infobased on BSD licenseOpen SourcecommercialOpen Source
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC++, Java, ScalaJava
Server operating systemsAll OS with a Java VM infoEmbedded (into Java applications) and Client-Server operating modesLinuxAll OS with a Java VMAndroid
Backend: server-less
iOS
Windows
Data schemeyesFixed schemaschema-freeyes
Typing infopredefined data types such as float or dateyesyesyesyes
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.nononono
Secondary indexesyesyesnoyes
SQL infoSupport of SQLyesyesnono
APIs and other access methodsHTTP API infoJDBC via HTTP
JDBC
ODBC
JDBC
SQLAlchemy
JCache
JPA
RESTful HTTP API
Supported programming languagesAll languages supporting JDBC/ODBC
Java
C++
Go
Java
Python
Scala
.Net
C++
Java
.Net
Java infowith Android only
Objective-C
React Native
Swift
Server-side scripts infoStored proceduresJava, SQLnonono inforuns within the applications so server-side scripts are unnecessary
Triggersyesnoyes infoLive Eventsyes infoChange Listeners
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioningShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneSource-replica replicationyes, with selectable consistency levelnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyesyes infoIn-Memory realm
User concepts infoAccess controlfine grained access rights according to SQL-standardfine grained access rights according to SQL-standardauthentification to access the cache via certificates or http basic authenticationyes

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More resources
HyperSQL infoalso known as HSQLDBOpenMLDBOracle CoherenceRealm
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