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DBMS > Oracle Coherence vs. PostGIS vs. Realm vs. STSdb

System Properties Comparison Oracle Coherence vs. PostGIS vs. Realm vs. STSdb

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Editorial information provided by DB-Engines
NameOracle Coherence  Xexclude from comparisonPostGIS  Xexclude from comparisonRealm  Xexclude from comparisonSTSdb  Xexclude from comparison
DescriptionOracles in-memory data grid solutionSpatial extension of PostgreSQLA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataKey-Value Store with special method for indexing infooptimized for high performance using a special indexing method
Primary database modelKey-value storeSpatial DBMSDocument storeKey-value store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.92
Rank#130  Overall
#22  Key-value stores
Score22.69
Rank#29  Overall
#1  Spatial DBMS
Score7.60
Rank#52  Overall
#9  Document stores
Score0.04
Rank#360  Overall
#52  Key-value stores
Websitewww.oracle.com/­java/­coherencepostgis.netrealm.iogithub.com/­STSSoft/­STSdb4
Technical documentationdocs.oracle.com/­en/­middleware/­standalone/­coherencepostgis.net/­documentationrealm.io/­docs
DeveloperOracleRealm, acquired by MongoDB in May 2019STS Soft SC
Initial release2007200520142011
Current release14.1, August 20233.4.2, February 20244.0.8, September 2015
License infoCommercial or Open SourcecommercialOpen Source infoGPL v2.0Open SourceOpen Source infoGPLv2, commercial license available
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaCC#
Server operating systemsAll OS with a Java VMAndroid
Backend: server-less
iOS
Windows
Windows
Data schemeschema-freeyesyesyes
Typing infopredefined data types such as float or dateyesyesyesyes infoprimitive types and user defined types (classes)
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.noyesno
Secondary indexesnoyesyesno
SQL infoSupport of SQLnoyesnono
APIs and other access methodsJCache
JPA
RESTful HTTP API
.NET Client API
Supported programming languages.Net
C++
Java
.Net
Java infowith Android only
Objective-C
React Native
Swift
C#
Java
Server-side scripts infoStored proceduresnouser defined functionsno inforuns within the applications so server-side scripts are unnecessaryno
Triggersyes infoLive Eventsyesyes infoChange Listenersno
Partitioning methods infoMethods for storing different data on different nodesShardingyes infobased on PostgreSQLnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesyes, with selectable consistency levelyes infobased on PostgreSQLnonenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency
Immediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataconfigurableACIDACIDno
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infooptionallyyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes infoIn-Memory realm
User concepts infoAccess controlauthentification to access the cache via certificates or http basic authenticationyes infobased on PostgreSQLyesno

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More resources
Oracle CoherencePostGISRealmSTSdb
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