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DBMS > Dgraph vs. LokiJS vs. Oracle Coherence vs. PostGIS

System Properties Comparison Dgraph vs. LokiJS vs. Oracle Coherence vs. PostGIS

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Editorial information provided by DB-Engines
NameDgraph  Xexclude from comparisonLokiJS  Xexclude from comparisonOracle Coherence  Xexclude from comparisonPostGIS  Xexclude from comparison
DescriptionDistributed and scalable native Graph DBMSIn-memory JavaScript DBMSOracles in-memory data grid solutionSpatial extension of PostgreSQL
Primary database modelGraph DBMSDocument storeKey-value storeSpatial DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.45
Rank#156  Overall
#15  Graph DBMS
Score0.43
Rank#264  Overall
#42  Document stores
Score1.92
Rank#130  Overall
#22  Key-value stores
Score22.69
Rank#29  Overall
#1  Spatial DBMS
Websitedgraph.iogithub.com/­techfort/­LokiJSwww.oracle.com/­java/­coherencepostgis.net
Technical documentationdgraph.io/­docstechfort.github.io/­LokiJSdocs.oracle.com/­en/­middleware/­standalone/­coherencepostgis.net/­documentation
DeveloperDgraph Labs, Inc.Oracle
Initial release2016201420072005
Current release14.1, August 20233.4.2, February 2024
License infoCommercial or Open SourceOpen Source infoApache 2.0Open SourcecommercialOpen Source infoGPL v2.0
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoJavaScriptJavaC
Server operating systemsLinux
OS X
Windows
server-less, requires a JavaScript environment (browser, Node.js)All OS with a Java VM
Data schemeschema-freeschema-freeschema-freeyes
Typing infopredefined data types such as float or dateyesnoyesyes
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.nononoyes
Secondary indexesyesyes infovia viewsnoyes
SQL infoSupport of SQLnononoyes
APIs and other access methodsGraphQL query language
gRPC (using protocol buffers) API
HTTP API
JavaScript APIJCache
JPA
RESTful HTTP API
Supported programming languagesC#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
JavaScript.Net
C++
Java
Server-side scripts infoStored proceduresnoView functions in JavaScriptnouser defined functions
Triggersnoyesyes infoLive Eventsyes
Partitioning methods infoMethods for storing different data on different nodesyesnoneShardingyes infobased on PostgreSQL
Replication methods infoMethods for redundantly storing data on multiple nodesSynchronous replication via Raftnoneyes, with selectable consistency levelyes infobased on PostgreSQL
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencynoneEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integritynononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDno infoatomic operations within a single collection possibleconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
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 infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno
User concepts infoAccess controlno infoPlanned for future releasesnoauthentification to access the cache via certificates or http basic authenticationyes infobased on PostgreSQL

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More resources
DgraphLokiJSOracle CoherencePostGIS
DB-Engines blog posts

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