DBMS > Dgraph vs. NuoDB vs. Tarantool

System Properties Comparison Dgraph vs. NuoDB vs. Tarantool

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Editorial information provided by DB-Engines
Name	Dgraph  Xexclude from comparison	NuoDB  Xexclude from comparison	Tarantool  Xexclude from comparison
Description	Distributed and scalable native Graph DBMS	NuoDB is a webscale distributed database that supports SQL and ACID transactions	In-memory computing platform with a flexible data schema for efficiently building high-performance applications
Primary database model	Graph DBMS	Relational DBMS	Key-value store
Secondary database models			Document store Relational DBMS Spatial DBMS with Tarantool/GIS extension
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 1.36 Rank #147   Overall #28   Key-value stores
Website	dgraph.io	nuodb.com	www.tarantool.io
Technical documentation	dgraph.io/­docs	doc.nuodb.com	www.tarantool.io/­en/­doc
Developer	Dgraph Labs, Inc.	NuoDB, Inc.	VK
Initial release	2016	2013	2008
Current release			2.4.2, July 2020
License Commercial or Open Source	Open Source Apache 2.0	commercial limited edition free	Open Source BSD
Cloud-based only Only available as a cloud service	no	no	no
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Implementation language	Go	C++	C and C++
Server operating systems	Linux OS X Windows	hosted Amazon EC2, Windows Azure, SoftLayer Linux OS X Windows	BSD Linux macOS
Data scheme	schema-free	yes	schema-free, schema definition possible
Typing predefined data types such as float or date	yes	yes	string, double, decimal, uuid, integer, blob, boolean
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	Full-featured ANSI SQL support
APIs and other access methods	GraphQL query language gRPC (using protocol buffers) API HTTP API	ADO.NET JDBC ODBC	Open binary protocol
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	C C# C++ Erlang Go Java JavaScript Lua Perl PHP Python Rust
Server-side scripts Stored procedures	no	Java, SQL	Lua, C and SQL stored procedures
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	Hash sharding based on virtual buckets
Replication methods Methods for redundantly storing data on multiple nodes	Synchronous replication via Raft	yes Managed transparently by NuoDB	Multi-source replication Source-replica replication
MapReduce Offers an API for user-defined Map/Reduce methods	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, with SQL
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	ACID tunable commit protocol	ACID, read commited
Concurrency Support for concurrent manipulation of data	yes	yes MVCC	yes, cooperative multitasking
Durability Support for making data persistent	yes	yes	yes, regular snapshots on disk, write ahead logging
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.		yes Temporary table	yes, full featured in-memory storage engine with persistence
User concepts Access control	no Planned for future releases	Standard SQL roles/ privileges, Administrative Users	Access rights for users and roles
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