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DBMS > Apache Phoenix vs. Dgraph vs. LokiJS vs. Oracle Coherence vs. Stardog

System Properties Comparison Apache Phoenix vs. Dgraph vs. LokiJS vs. Oracle Coherence vs. Stardog

Editorial information provided by DB-Engines
NameApache Phoenix  Xexclude from comparisonDgraph  Xexclude from comparisonLokiJS  Xexclude from comparisonOracle Coherence  Xexclude from comparisonStardog  Xexclude from comparison
DescriptionA scale-out RDBMS with evolutionary schema built on Apache HBaseDistributed and scalable native Graph DBMSIn-memory JavaScript DBMSOracles in-memory data grid solutionEnterprise Knowledge Graph platform and graph DBMS with high availability, high performance reasoning, and virtualization
Primary database modelRelational DBMSGraph DBMSDocument storeKey-value storeGraph DBMS
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.10
Rank#131  Overall
#63  Relational DBMS
Score1.53
Rank#164  Overall
#15  Graph DBMS
Score0.52
Rank#259  Overall
#41  Document stores
Score2.32
Rank#126  Overall
#23  Key-value stores
Score2.03
Rank#136  Overall
#12  Graph DBMS
#6  RDF stores
Websitephoenix.apache.orgdgraph.iogithub.com/­techfort/­LokiJSwww.oracle.com/­java/­coherencewww.stardog.com
Technical documentationphoenix.apache.orgdgraph.io/­docstechfort.github.io/­LokiJSdocs.oracle.com/­en/­middleware/­standalone/­coherencedocs.stardog.com
DeveloperApache Software FoundationDgraph Labs, Inc.OracleStardog-Union
Initial release20142016201420072010
Current release5.0-HBase2, July 2018 and 4.15-HBase1, December 201914.1, August 20237.3.0, May 2020
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open Source infoApache 2.0Open Sourcecommercialcommercial info60-day fully-featured trial license; 1-year fully-featured non-commercial use license for academics/students
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaGoJavaScriptJavaJava
Server operating systemsLinux
Unix
Windows
Linux
OS X
Windows
server-less, requires a JavaScript environment (browser, Node.js)All OS with a Java VMLinux
macOS
Windows
Data schemeyes infolate-bound, schema-on-read capabilitiesschema-freeschema-freeschema-freeschema-free and OWL/RDFS-schema support
Typing infopredefined data types such as float or dateyesyesnoyesyes
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.nonononono infoImport/export of XML data possible
Secondary indexesyesyesyes infovia viewsnoyes infosupports real-time indexing in full-text and geospatial
SQL infoSupport of SQLyesnononoYes, compatible with all major SQL variants through dedicated BI/SQL Server
APIs and other access methodsJDBCGraphQL query language
gRPC (using protocol buffers) API
HTTP API
JavaScript APIJCache
JPA
RESTful HTTP API
GraphQL query language
HTTP API
Jena RDF API
OWL
RDF4J API
Sesame REST HTTP Protocol
SNARL
SPARQL
Spring Data
Stardog Studio
TinkerPop 3
Supported programming languagesC
C#
C++
Go
Groovy
Java
PHP
Python
Scala
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
JavaScript.Net
C++
Java
.Net
Clojure
Groovy
Java
JavaScript
Python
Ruby
Server-side scripts infoStored proceduresuser defined functionsnoView functions in JavaScriptnouser defined functions and aggregates, HTTP Server extensions in Java
Triggersnonoyesyes infoLive Eventsyes infovia event handlers
Partitioning methods infoMethods for storing different data on different nodesShardingyesnoneShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
Synchronous replication via Raftnoneyes, with selectable consistency levelMulti-source replication in HA-Cluster
MapReduce infoOffers an API for user-defined Map/Reduce methodsHadoop integrationnoyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency or Eventual ConsistencyImmediate ConsistencynoneEventual Consistency
Immediate Consistency
Immediate Consistency in HA-Cluster
Foreign keys infoReferential integritynonononoyes inforelationships in graphs
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDno infoatomic operations within a single collection possibleconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyes 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.yesyesyesyes
User concepts infoAccess controlAccess Control Lists (using HBase ACL) for RBAC, integration with Apache Ranger for RBAC & ABAC, multi-tenancyno infoPlanned for future releasesnoauthentification to access the cache via certificates or http basic authenticationAccess rights for users and roles

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More resources
Apache PhoenixDgraphLokiJSOracle CoherenceStardog
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