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DBMS > OpenQM vs. Oracle Coherence vs. XTDB

System Properties Comparison OpenQM vs. Oracle Coherence vs. XTDB

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Editorial information provided by DB-Engines
NameOpenQM infoalso called QM  Xexclude from comparisonOracle Coherence  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionQpenQM is a high-performance, self-tuning, multi-value DBMSOracles in-memory data grid solutionA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelMultivalue DBMSKey-value storeDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.34
Rank#284  Overall
#10  Multivalue DBMS
Score1.97
Rank#129  Overall
#22  Key-value stores
Score0.18
Rank#332  Overall
#46  Document stores
Websitewww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmwww.oracle.com/­java/­coherencegithub.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationdocs.oracle.com/­en/­middleware/­standalone/­coherencewww.xtdb.com/­docs
DeveloperRocket Software, originally Martin PhillipsOracleJuxt Ltd.
Initial release199320072019
Current release3.4-1214.1, August 20231.19, September 2021
License infoCommercial or Open SourceOpen Source infoGPLv2, extended commercial license availablecommercialOpen 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 languageJavaClojure
Server operating systemsAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
All OS with a Java VMAll OS with a Java 8 (and higher) VM
Linux
Data schemeyes infowith some exceptionsschema-freeschema-free
Typing infopredefined data types such as float or dateyesyes, 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.yesnono
Secondary indexesyesnoyes
SQL infoSupport of SQLnonolimited SQL, making use of Apache Calcite
APIs and other access methodsJCache
JPA
RESTful HTTP API
HTTP REST
JDBC
Supported programming languages.Net
Basic
C
Java
Objective C
PHP
Python
.Net
C++
Java
Clojure
Java
Server-side scripts infoStored proceduresyesnono
Triggersyesyes infoLive Eventsno
Partitioning methods infoMethods for storing different data on different nodesyesShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesyesyes, with selectable consistency levelyes, 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 ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyes infooptionallyyes, 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.yes
User concepts infoAccess controlAccess rights can be defined down to the item levelauthentification to access the cache via certificates or http basic authentication

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More resources
OpenQM infoalso called QMOracle CoherenceXTDB infoformerly named Crux
Recent citations in the news

Create custom Event Compression Policies in Enterprise Manager to reduce event noise
21 September 2023, blogs.oracle.com

Microservices with Major New Coherence and Helidon Releases
9 August 2022, blogs.oracle.com

Turkcell: Processing 70 million messages per day with Coherence and WebLogic
4 January 2013, blogs.oracle.com

Nike achieves scalability and performance with Oracle Coherence & Exadata
20 December 2012, blogs.oracle.com

Oracle releases free open source Oracle Coherence community edition
28 June 2020, iTWire

provided by Google News



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