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DBMS > IBM Cloudant vs. Tkrzw vs. VelocityDB

System Properties Comparison IBM Cloudant vs. Tkrzw vs. VelocityDB

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Editorial information provided by DB-Engines
NameIBM Cloudant  Xexclude from comparisonTkrzw infoSuccessor of Tokyo Cabinet and Kyoto Cabinet  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionDatabase as a Service offering based on Apache CouchDBA concept of libraries, allowing an application program to store and query key-value pairs in a file. Successor of Tokyo Cabinet and Kyoto CabinetA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument storeKey-value storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score4.35
Rank#94  Overall
#16  Document stores
Score0.00
Rank#389  Overall
#63  Key-value stores
Score0.19
Rank#356  Overall
#35  Graph DBMS
#20  Object oriented DBMS
Websitewww.ibm.com/­cloud/­cloudantdbmx.net/­tkrzwvelocitydb.com
Technical documentationcloud.ibm.com/­docs/­Cloudantvelocitydb.com/­UserGuide
DeveloperIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Mikio HirabayashiVelocityDB Inc
Initial release201020202011
Current release0.9.3, August 20207.x
License infoCommercial or Open SourcecommercialOpen Source infoApache Version 2.0commercial
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageErlangC++C#
Server operating systemshostedLinux
macOS
Any that supports .NET
Data schemeschema-freeschema-freeyes
Typing infopredefined data types such as float or datenonoyes
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.nonono
Secondary indexesyesyes
SQL infoSupport of SQLnonono
APIs and other access methodsRESTful HTTP/JSON API.Net
Supported programming languagesC#
Java
JavaScript
Objective-C
PHP
Ruby
C++
Java
Python
Ruby
.Net
Server-side scripts infoStored proceduresView functions (Map-Reduce) in JavaScriptnono
TriggersyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
none
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 integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a document possibleACID
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic lockingyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes infousing specific database classesyes
User concepts infoAccess controlAccess rights for users can be defined per databasenoBased on Windows Authentication

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More resources
IBM CloudantTkrzw infoSuccessor of Tokyo Cabinet and Kyoto CabinetVelocityDB
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