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DBMS > Dgraph vs. HarperDB vs. IBM Cloudant vs. NuoDB

System Properties Comparison Dgraph vs. HarperDB vs. IBM Cloudant vs. NuoDB

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Editorial information provided by DB-Engines
NameDgraph  Xexclude from comparisonHarperDB  Xexclude from comparisonIBM Cloudant  Xexclude from comparisonNuoDB  Xexclude from comparison
DescriptionDistributed and scalable native Graph DBMSHarperDB takes the "stack" out of "tech stack" by combining an ultra-fast document-style data store, in-memory cache, real-time message broker, and your application components into a single distributed technology.Database as a Service offering based on Apache CouchDBNuoDB is a webscale distributed database that supports SQL and ACID transactions
Primary database modelGraph DBMSDocument storeDocument storeRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.39
Rank#155  Overall
#15  Graph DBMS
Score0.55
Rank#243  Overall
#38  Document stores
Score2.85
Rank#95  Overall
#18  Document stores
Score0.87
Rank#201  Overall
#94  Relational DBMS
Websitedgraph.iowww.harperdb.iowww.ibm.com/­products/­cloudantwww.3ds.com/­nuodb-distributed-sql-database
Technical documentationdgraph.io/­docsdocs.harperdb.io/­docscloud.ibm.com/­docs/­Cloudantdoc.nuodb.com
DeveloperDgraph Labs, Inc.HarperDBIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Dassault Systèmes infooriginally NuoDB, Inc.
Initial release2016201720102013
Current release3.1, August 2021
License infoCommercial or Open SourceOpen Source infoApache 2.0commercial infofree community edition availablecommercialcommercial infolimited edition free
Cloud-based only infoOnly available as a cloud servicenonoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoNode.jsErlangC++
Server operating systemsLinux
OS X
Windows
Linux
OS X
hostedhosted infoAmazon EC2, Windows Azure, SoftLayer
Linux
OS X
Windows
Data schemeschema-freedynamic schemaschema-freeyes
Typing infopredefined data types such as float or dateyesyes infoJSON data typesnoyes
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.nononono
Secondary indexesyesyesyesyes
SQL infoSupport of SQLnoSQL-like data manipulation statementsnoyes
APIs and other access methodsGraphQL query language
gRPC (using protocol buffers) API
HTTP API
JDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
RESTful HTTP/JSON APIADO.NET
JDBC
ODBC
Supported programming languagesC#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
C#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
C
C++
Go
Java
JavaScript
JavaScript (Node.js)
PHP
Python
Ruby
Server-side scripts infoStored proceduresnoCustom Functions infosince release 3.1View functions (Map-Reduce) in JavaScriptJava, SQL
Triggersnonoyesyes
Partitioning methods infoMethods for storing different data on different nodesyesA table resides as a whole on one (or more) nodes in a clusterShardingdata is dynamically stored/cached on the nodes where it is read/written
Replication methods infoMethods for redundantly storing data on multiple nodesSynchronous replication via Raftyes infothe nodes on which a table resides can be definedMulti-source replication
Source-replica replication
yes infoManaged transparently by NuoDB
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDAtomic execution of specific operationsno infoatomic operations within a document possibleACID infotunable commit protocol
Concurrency infoSupport for concurrent manipulation of datayesyesyes infoOptimistic lockingyes infoMVCC
Durability infoSupport for making data persistentyesyes, using LMDByesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes infoTemporary table
User concepts infoAccess controlno infoPlanned for future releasesAccess rights for users and rolesAccess rights for users can be defined per databaseStandard SQL roles/ privileges, Administrative Users

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More resources
DgraphHarperDBIBM CloudantNuoDB
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