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DBMS > Cloudant vs. Memgraph vs. OpenQM

System Properties Comparison Cloudant vs. Memgraph vs. OpenQM

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Editorial information provided by DB-Engines
NameCloudant  Xexclude from comparisonMemgraph  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparison
DescriptionDatabase as a Service offering based on Apache CouchDBA hybrid, in-memory first, distributed graph DBMS delivering high-performance on analytical and transactional workloads at enterprise scaleQpenQM is a high-performance, self-tuning, multi-value DBMS
Primary database modelDocument storeGraph DBMSMultivalue DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.50
Rank#78  Overall
#15  Document stores
Score0.05
Rank#314  Overall
#30  Graph DBMS
Score0.27
Rank#243  Overall
#10  Multivalue DBMS
Websitecloudant.commemgraph.comwww.openqm.com
Technical documentationdocs.cloudant.comdocs.memgraph.comwww.openqm.com/­support/­documentation
DeveloperIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Memgraph LtdMartin Phillips
Initial release201020171993
Current release3.4-12
License infoCommercial or Open Sourcecommercialcommercial infoFree license availableOpen Source infoGPLv2, extended commercial license available
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageErlangC and C++
Server operating systemshostedLinuxAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
Data schemeschema-freeschema-free and schema-optionalyes infowith some exceptions
Typing infopredefined data types such as float or datenoyes
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.nonoyes
Secondary indexesyesyes
SQL infoSupport of SQLnonono
APIs and other access methodsRESTful HTTP/JSON APIBolt protocol
Cypher query language
Supported programming languagesC#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
C
C++
Elixir
Go
Haskell
Java
JavaScript
PHP
Python
Ruby
Scala
.Net
Basic
C
Java
Objective C
PHP
Python
Server-side scripts infoStored proceduresView functions (Map-Reduce) in JavaScriptyes
Triggersyesyes
Partitioning methods infoMethods for storing different data on different nodesShardingSharding infodynamic graph partitioningyes
Replication methods infoMethods for redundantly storing data on multiple nodesMaster-master replication
Master-slave replication
Multi-Master replication using RAFTyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyes inforelationships in graphsno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a document possibleACID infowith snapshot isolationACID
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic lockingyes, multi-version concurrency control (MVCC)yes
Durability infoSupport for making data persistentyesyes infowith periodic snapshot and write-ahead logging (WAL) of changesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes
User concepts infoAccess controlAccess rights for users can be defined per databaseUsers, roles and permissionsAccess rights can be defined down to the item level

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