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DBMS > LevelDB vs. Memgraph vs. NebulaGraph vs. OpenQM vs. Sequoiadb

System Properties Comparison LevelDB vs. Memgraph vs. NebulaGraph vs. OpenQM vs. Sequoiadb

Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonMemgraph  Xexclude from comparisonNebulaGraph  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparisonSequoiadb  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesAn open source graph database built for real-time streaming and compatible with Neo4jA distributed, linear scalable, high perfomant Graph DBMSQpenQM is a high-performance, self-tuning, multi-value DBMSNewSQL database with distributed OLTP and SQL
Primary database modelKey-value storeGraph DBMSGraph DBMSMultivalue DBMSDocument store
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.25
Rank#115  Overall
#19  Key-value stores
Score3.19
Rank#94  Overall
#8  Graph DBMS
Score2.23
Rank#116  Overall
#10  Graph DBMS
Score0.34
Rank#284  Overall
#10  Multivalue DBMS
Score0.50
Rank#258  Overall
#41  Document stores
#120  Relational DBMS
Websitegithub.com/­google/­leveldbmemgraph.comgithub.com/­vesoft-inc/­nebula
www.nebula-graph.io
www.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmwww.sequoiadb.com
Technical documentationgithub.com/­google/­leveldb/­blob/­main/­doc/­index.mdmemgraph.com/­docsdocs.nebula-graph.iowww.sequoiadb.com/­en/­index.php?m=Files&a=index
Social network pagesLinkedInTwitterFacebookGitHubDiscord
DeveloperGoogleMemgraph LtdVesoft Inc.Rocket Software, originally Martin PhillipsSequoiadb Ltd.
Initial release20112017201919932013
Current release1.23, February 20213.4-12
License infoCommercial or Open SourceOpen Source infoBSDOpen Source infoBSL 1.1; commercial license for enterprise edition availableOpen Source infoApache Version 2.0 + Common Clause 1.0Open Source infoGPLv2, extended commercial license availableOpen Source infoServer: AGPL; Client: Apache V2
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 languageC++C and C++C++C++
Server operating systemsIllumos
Linux
OS X
Windows
LinuxLinuxAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
Linux
Data schemeschema-freeschema-free and schema-optionalStrong typed schemayes infowith some exceptionsschema-free
Typing infopredefined data types such as float or datenoyesyesyes infooid, date, timestamp, binary, regex
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.nononoyesno
Secondary indexesnoyes infoNebula Graph internally uses the Key-Value store RocksDB for persistency. The vertices, edges, and their properties are stored as Key while their values are stored as Value. The primary indexes are per Key and secondary indexes are per Value.yesyes
SQL infoSupport of SQLnonoSQL-like query languagenoSQL-like query language
APIs and other access methodsBolt protocol
Cypher query language
Browser interface
console (shell)
Cypher Query Language
GO Object Graph Mapper
Java Object Graph Mapper
NGBatis infoORM framework for NebulaGraph and Spring-Boot
Proprietary native API
Python Object Graph Mapper
Query language nGQL
proprietary protocol using JSON
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
.Net
C
C++
Elixir
Go
Haskell
Java
JavaScript
PHP
Python
Ruby
Scala
.Net
C++
Go
Java
PHP
Python
.Net
Basic
C
Java
Objective C
PHP
Python
.Net
C++
Java
PHP
Python
Server-side scripts infoStored proceduresnouser defined functionsyesJavaScript
Triggersnoyesno
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infodynamic graph partitioningShardingyesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneMulti-source replication using RAFTCausal Clustering using Raft protocolyesSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integritynoyes inforelationships in graphsyes infoRelationships in graphsnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACID infowith snapshot isolationACIDACIDDocument is locked during a transaction
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)yesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyes infowith periodic snapshot and write-ahead logging (WAL) of changesyes infousing RocksDByesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno
User concepts infoAccess controlnoUsers, roles and permissionsRole-based access controlAccess rights can be defined down to the item levelsimple password-based access control
More information provided by the system vendor
LevelDBMemgraphNebulaGraphOpenQM infoalso called QMSequoiadb
Specific characteristicsMemgraph directly connects to your streaming infrastructure so you and your team...
» more
NebulaGraph is a truly distributed, linearly scalable, lightning-fast graph database,...
» more
Competitive advantagesBusiness Source License ensures a future for the Memgraph community MAGE algorithm...
» more
NebulaGraph boasts the world's only graph database solution that is able to host...
» more
Typical application scenariosGraph algorithms in bioinformatics Social network analysis Cryptocurrency network...
» more
Social networking Fraud detection Knowledge graph Data warehouse management Anti...
» more
Key customersCompanies from a variety of industries have implemented NebulaGraph Database in production,...
» more
Market metricsAt our very early stage, NebulaGraph has already received over 10,000 stars on GitHub...
» more
Licensing and pricing modelsYou can check out our pricing model and licenses on the company website .
» more
NebulaGraph is open source and free to use under Apache 2.0 license.
» more

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LevelDBMemgraphNebulaGraphOpenQM infoalso called QMSequoiadb
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