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DBMS > eXtremeDB vs. Heroic vs. Neo4j vs. Realm vs. Stardog

System Properties Comparison eXtremeDB vs. Heroic vs. Neo4j vs. Realm vs. Stardog

Editorial information provided by DB-Engines
NameeXtremeDB  Xexclude from comparisonHeroic  Xexclude from comparisonNeo4j  Xexclude from comparisonRealm  Xexclude from comparisonStardog  Xexclude from comparison
DescriptionNatively in-memory DBMS with options for persistency, high-availability and clusteringTime Series DBMS built at Spotify based on Cassandra or Google Cloud Bigtable, and ElasticSearchOpen source graph databaseA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataEnterprise Knowledge Graph and graph DBMS with high availability and high performance reasoning
Primary database modelRelational DBMS
Time Series DBMS
Time Series DBMSGraph DBMSDocument storeGraph DBMS
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.42
Rank#218  Overall
#104  Relational DBMS
#12  Time Series DBMS
Score0.19
Rank#254  Overall
#17  Time Series DBMS
Score50.56
Rank#22  Overall
#1  Graph DBMS
Score8.27
Rank#45  Overall
#8  Document stores
Score0.78
Rank#167  Overall
#13  Graph DBMS
#7  RDF stores
Websitewww.mcobject.com/­extremedbfamilyspotify.github.io/­heroic/­#!/­indexneo4j.comrealm.iowww.stardog.com
Technical documentationwww.mcobject.com/­docs/­eXtremeDB.htmspotify.github.io/­heroic/­#!/­docs/­overviewneo4j.com/­docsrealm.io/­docswww.stardog.com/­docs
DeveloperMcObjectSpotifyNeo4j, Inc.Realm, acquired by MongoDB in May 2019Stardog-Union
Initial release20012014200720142010
Current release8.0, May 20183.5.8, July 20196.2.3, July 2019
License infoCommercial or Open SourcecommercialOpen Source infoApache 2.0Open Source infoGPL version3, commercial licenses availableOpen Sourcecommercial 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

Providers of DBaaS offerings, please contact us to be listed.
Neo4j Aura: The simplest way to run Neo4j in the cloud
Implementation languageC and C++JavaJava, ScalaJava
Server operating systemsAIX
HP-UX
Linux
macOS
Solaris
Windows
Linux infoCan also be used server-less as embedded Java database.
OS X
Solaris
Windows
Android
Backend: server-less
iOS
Windows
Linux
macOS
Windows
Data schemeyesschema-freeschema-free and schema-optionalyesschema-free and OWL/RDFS-schema support
Typing infopredefined data types such as float or dateyesyesyesyesyes
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.no infosupport of XML interfaces availablenonono infoImport/export of XML data possible
Secondary indexesyesyes infovia Elasticsearchyes infopluggable indexing subsystem, by default Apache Luceneyesyes infosupports real-time indexing in full-text and geospatial
SQL infoSupport of SQLyes infowith the option: eXtremeSQLnononoSPARQL is used as query language
APIs and other access methods.NET Client API
JDBC
JNI
ODBC
proprietary protocol
HQL (Heroic Query Language, a JSON-based language)
HTTP API
Bolt protocol
Cypher query language
Java API
Neo4j-OGM infoObject Graph Mapper
RESTful HTTP API
Spring Data Neo4j
TinkerPop 3
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 languages.Net
C
C#
C++
Java
Lua
Python
.Net
Clojure
Elixir
Go
Groovy
Haskell
Java
JavaScript
Perl
PHP
Python
Ruby
Scala
.Net
Java infowith Android only
Objective-C
React Native
Swift
.Net
Clojure
Groovy
Java
JavaScript
Python
Ruby
Server-side scripts infoStored proceduresyesnoyes infoUser defined Procedures and Functionsno inforuns within the applications so server-side scripts are unnecessaryuser defined functions and aggregates, HTTP Server extensions in Java
Triggersyes infoby defining eventsnoyes infovia event handleryes infoChange Listenersyes infovia event handlers
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioning / shardingShardingnonenonenone
Replication methods infoMethods for redundantly storing data on multiple nodesMaster-master replication infoby means of eXtremeDB Cluster option
Master-slave replication infoby means of eXtremeDB High Availability option
yesCausal Clustering using Raft protocol infoavailable in in Enterprise Version onlynoneMaster-master replication in HA-Cluster
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency
Causal and Eventual Consistency configurable in Causal Cluster setup
Immediate Consistency in stand-alone mode
Immediate ConsistencyImmediate Consistency in HA-Cluster
Foreign keys infoReferential integrityyesnoyes infoRelationships in graphsnoyes inforelationships in graphs
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic (MVCC) and pessimistic (locking) strategies availableyesyesyes
Durability infoSupport for making data persistentyesyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes infoIn-Memory realmyes
User concepts infoAccess controlUsers, roles and permissions. Pluggable authentication with supported standards (LDAP, Active Directory, Kerberos)yesAccess rights for users and roles
More information provided by the system vendor
eXtremeDBHeroicNeo4jRealmStardog
Specific characteristicseXtremeDB is an in-memory and/or persistent database system that offers an ultra-small...
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Neo4j is a native graph database platform that is built to store, query, analyze...
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Now a part of MongoDB Data Platform , Realm Database is the fast, easy to use, and...
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Stardog is a knowledge graph platform backed by a performant, scalable graph database....
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Competitive advantageseXtremeDB databases can be modeled relationally or as objects and can utilize SQL...
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Neo4j database is the only transactional database that combines everything you need...
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Realm ensures offline-first functionality, meaning apps run smoothly and deliver...
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Stardog is uniquely designed to aid in data integration for your complex data. Benefits...
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Typical application scenariosIoT application across all markets: Industrial Control, Netcom, Telecom, Defense,...
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Real-Time Recommendations Master Data Management Identity and Access Management Network...
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Mobile Consumer Apps First-Line Worker Apps
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Stardog is frequently used for: Anti-money laundering & fraud monitoring Customer...
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Key customersSchneider Electronics, F5 Networks, TNS, Boeing, Northrop Grumman, GoPro, ViaSat,...
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Over 300 commercial customers and over 750 startups use Neo4j. Flagship customers...
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Cathay Pacific Royal Carribbean Cruise Lines Open Source Database powers apps built...
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Bosch, Dow Jones, Elsevier, Ericsson, Morgan Stanley, NASA, NIH, Nokia, Salesforce,...
» more
Market metricsWith hundreds of customers and over 28 million devices/applications using the product...
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Neo4j boasts the world's largest graph database ecosystem with more than a 15 million...
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Used by 100,000+ developers 2 bn installs Currently used in 40k+ applications in...
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Stardog's technology is based on ground-breaking research by our founders cited 10,000+...
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Licensing and pricing modelsFor server use cases, there is a simple per-server license irrespective of the number...
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GPL v3 license that can be used all the places where you might use MySQL. Neo4j Commercial...
» more
Realm database is licensed under the Apache License v2.0.
» more
A fully-featured 60-day Trial license is available for those testing Stardog; contact...
» more
News

This Week in Neo4j – Full Text Search Tips and Tricks, Learning Geography, MongoDB to Graph
7 December 2019

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30 November 2019

#GraphCast: “All Graph Databases Are Not Created Equal”
29 November 2019

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
eXtremeDBHeroicNeo4jRealmStardog
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Conferences and events

GraphConnect 2020
New York, USA, 20-22 April 2020

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