DBMS > Dgraph vs. NuoDB vs. Yaacomo

System Properties Comparison Dgraph vs. NuoDB vs. Yaacomo

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Editorial information provided by DB-Engines
Name	Dgraph  Xexclude from comparison	NuoDB  Xexclude from comparison	Yaacomo  Xexclude from comparison
Description	Distributed and scalable native Graph DBMS	NuoDB is a webscale distributed database that supports SQL and ACID transactions	OpenCL based in-memory RDBMS, designed for efficiently utilizing the hardware via parallel computing
Primary database model	Graph DBMS	Relational DBMS	Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 1.38 Rank #145   Overall #11   Graph DBMS	Score 0.96 Rank #178   Overall #87   Relational DBMS	Score 0.01 Rank #356   Overall #155   Relational DBMS
Website	dgraph.io	nuodb.com	yaacomo.com
Technical documentation	dgraph.io/­docs	doc.nuodb.com
Developer	Dgraph Labs, Inc.	NuoDB, Inc.	Q2WEB GmbH
Initial release	2016	2013	2009
License Commercial or Open Source	Open Source Apache 2.0	commercial limited edition free	commercial
Cloud-based only Only available as a cloud service	no	no	no
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Implementation language	Go	C++
Server operating systems	Linux OS X Windows	hosted Amazon EC2, Windows Azure, SoftLayer Linux OS X Windows	Android Linux Windows
Data scheme	schema-free	yes	yes
Typing predefined data types such as float or date	yes	yes	yes
XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.	no	no	no
Secondary indexes	yes	yes	yes
SQL Support of SQL	no	yes	yes
APIs and other access methods	GraphQL query language gRPC (using protocol buffers) API HTTP API	ADO.NET JDBC ODBC	JDBC ODBC
Supported programming languages	C# C++ Go Java JavaScript (Node.js) PHP Python Ruby	.Net C C++ Go Java JavaScript JavaScript (Node.js) PHP Python Ruby
Server-side scripts Stored procedures	no	Java, SQL
Triggers	no	yes	yes
Partitioning methods Methods for storing different data on different nodes	yes	data is dynamically stored/cached on the nodes where it is read/written	horizontal partitioning
Replication methods Methods for redundantly storing data on multiple nodes	Synchronous replication via Raft	yes Managed transparently by NuoDB	Source-replica replication
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	yes	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	ACID tunable commit protocol	ACID
Concurrency Support for concurrent manipulation of data	yes	yes MVCC	yes
Durability Support for making data persistent	yes	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.		yes Temporary table	yes
User concepts Access control	no Planned for future releases	Standard SQL roles/ privileges, Administrative Users	fine grained access rights according to SQL-standard
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	Dgraph	NuoDB	Yaacomo
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