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DBMS > Lovefield vs. OpenQM vs. Oracle Coherence vs. Yaacomo

System Properties Comparison Lovefield vs. OpenQM vs. Oracle Coherence vs. Yaacomo

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Editorial information provided by DB-Engines
NameLovefield  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparisonOracle Coherence  Xexclude from comparisonYaacomo  Xexclude from comparison
Yaacomo seems to be discontinued and is removed from the DB-Engines ranking
DescriptionEmbeddable relational database for web apps written in pure JavaScriptQpenQM is a high-performance, self-tuning, multi-value DBMSOracles in-memory data grid solutionOpenCL based in-memory RDBMS, designed for efficiently utilizing the hardware via parallel computing
Primary database modelRelational DBMSMultivalue DBMSKey-value storeRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.33
Rank#286  Overall
#131  Relational DBMS
Score0.34
Rank#284  Overall
#10  Multivalue DBMS
Score1.97
Rank#129  Overall
#22  Key-value stores
Websitegoogle.github.io/­lovefieldwww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmwww.oracle.com/­java/­coherenceyaacomo.com
Technical documentationgithub.com/­google/­lovefield/­blob/­master/­docs/­spec_index.mddocs.oracle.com/­en/­middleware/­standalone/­coherence
DeveloperGoogleRocket Software, originally Martin PhillipsOracleQ2WEB GmbH
Initial release2014199320072009
Current release2.1.12, February 20173.4-1214.1, August 2023
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoGPLv2, extended commercial license availablecommercialcommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaScriptJava
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js) infotested with Chrome, Firefox, IE, SafariAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
All OS with a Java VMAndroid
Linux
Windows
Data schemeyesyes infowith some exceptionsschema-freeyes
Typing infopredefined data types such as float or dateyesyesyes
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.noyesnono
Secondary indexesyesyesnoyes
SQL infoSupport of SQLSQL-like query language infovia JavaScript builder patternnonoyes
APIs and other access methodsJCache
JPA
RESTful HTTP API
JDBC
ODBC
Supported programming languagesJavaScript.Net
Basic
C
Java
Objective C
PHP
Python
.Net
C++
Java
Server-side scripts infoStored proceduresnoyesno
TriggersUsing read-only observersyesyes infoLive Eventsyes
Partitioning methods infoMethods for storing different data on different nodesnoneyesShardinghorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyesyes, with selectable consistency levelSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesnonoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes, by using IndexedDB or the cloud service Firebase Realtime Databaseyesyes infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infousing MemoryDByesyes
User concepts infoAccess controlnoAccess rights can be defined down to the item levelauthentification to access the cache via certificates or http basic authenticationfine grained access rights according to SQL-standard

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More resources
LovefieldOpenQM infoalso called QMOracle CoherenceYaacomo
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