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DBMS > Dgraph vs. Memcached vs. NuoDB vs. Oracle NoSQL vs. VelocityDB

System Properties Comparison Dgraph vs. Memcached vs. NuoDB vs. Oracle NoSQL vs. VelocityDB

Editorial information provided by DB-Engines
NameDgraph  Xexclude from comparisonMemcached  Xexclude from comparisonNuoDB  Xexclude from comparisonOracle NoSQL  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionDistributed and scalable native Graph DBMSIn-memory key-value store, originally intended for cachingNuoDB is a webscale distributed database that supports SQL and ACID transactionsA multi-model, scalable, distributed NoSQL database, designed to provide highly reliable, flexible, and available data management across a configurable set of storage nodesA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelGraph DBMSKey-value storeRelational DBMSDocument store
Key-value store
Relational DBMS
Graph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.51
Rank#139  Overall
#11  Graph DBMS
Score25.34
Rank#32  Overall
#4  Key-value stores
Score1.00
Rank#176  Overall
#86  Relational DBMS
Score4.41
Rank#81  Overall
#14  Document stores
#13  Key-value stores
#44  Relational DBMS
Score0.06
Rank#318  Overall
#32  Graph DBMS
#17  Object oriented DBMS
Websitedgraph.iowww.memcached.orgnuodb.comwww.oracle.com/­database/­technologies/­related/­nosql.htmlvelocitydb.com
Technical documentationdgraph.io/­docsgithub.com/­memcached/­memcached/­wikidoc.nuodb.comdocs.oracle.com/­en/­database/­other-databases/­nosql-database/­index.htmlvelocitydb.com/­UserGuide
DeveloperDgraph Labs, Inc.Danga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalNuoDB, Inc.OracleVelocityDB Inc
Initial release20162003201320112011
Current release1.6.9, November 202021.2, September 20217.x
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoBSD licensecommercial infolimited edition freeOpen Source infoProprietary for Enterprise Edition (Oracle Database EE license has Oracle NoSQL database EE covered: details)commercial
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.
Implementation languageGoCC++JavaC#
Server operating systemsLinux
OS X
Windows
FreeBSD
Linux
OS X
Unix
Windows
hosted infoAmazon EC2, Windows Azure, SoftLayer
Linux
OS X
Windows
Linux
Solaris SPARC/x86
Any that supports .NET
Data schemeschema-freeschema-freeyesSupport Fixed schema and Schema-less deployment with the ability to interoperate between them.yes
Typing infopredefined data types such as float or dateyesnoyesoptionalyes
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 indexesyesnoyesyesyes
SQL infoSupport of SQLnonoyesSQL-like DML and DDL statementsno
APIs and other access methodsGraphQL query language
gRPC (using protocol buffers) API
HTTP API
Proprietary protocolADO.NET
JDBC
ODBC
RESTful HTTP API.Net
Supported programming languagesC#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
C
C++
Go
Java
JavaScript
JavaScript (Node.js)
PHP
Python
Ruby
C
C#
Go
Java
JavaScript (Node.js)
Python
.Net
Server-side scripts infoStored proceduresnonoJava, SQLnono
TriggersnonoyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesyesnonedata is dynamically stored/cached on the nodes where it is read/writtenShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSynchronous replication via Raftnone infoRepcached, a Memcached patch, provides this functionallityyes infoManaged transparently by NuoDBElectable source-replica replication per shard. Support distributed global deployment with Multi-region table feature
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononowith Hadoop integrationno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Immediate Consistency infodepending on configuration
Immediate Consistency
Foreign keys infoReferential integritynonoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACID infotunable commit protocolconfigurable infoACID within a storage node (=shard)ACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes infoMVCCyesyes
Durability infoSupport for making data persistentyesnoyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoTemporary tableyes infooff heap cacheyes
User concepts infoAccess controlno infoPlanned for future releasesyes infousing SASL (Simple Authentication and Security Layer) protocolStandard SQL roles/ privileges, Administrative UsersAccess rights for users and rolesBased on Windows Authentication
More information provided by the system vendor
DgraphMemcachedNuoDBOracle NoSQLVelocityDB
Competitive advantagesHorizontally scalable transactional graph database with fast arbitrary-depth joins...
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DgraphMemcachedNuoDBOracle NoSQLVelocityDB
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