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DBMS > IBM Cloudant vs. Realm vs. Transwarp StellarDB vs. VelocityDB

System Properties Comparison IBM Cloudant vs. Realm vs. Transwarp StellarDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameIBM Cloudant  Xexclude from comparisonRealm  Xexclude from comparisonTranswarp StellarDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionDatabase as a Service offering based on Apache CouchDBA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataA distributed graph DBMS built for enterprise-level graph applicationsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument storeDocument storeGraph DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.85
Rank#95  Overall
#18  Document stores
Score7.18
Rank#52  Overall
#8  Document stores
Score0.00
Rank#385  Overall
#40  Graph DBMS
Score0.00
Rank#385  Overall
#40  Graph DBMS
#21  Object oriented DBMS
Websitewww.ibm.com/­products/­cloudantrealm.iowww.transwarp.cn/­en/­product/­stellardbvelocitydb.com
Technical documentationcloud.ibm.com/­docs/­Cloudantrealm.io/­docsvelocitydb.com/­UserGuide
DeveloperIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Realm, acquired by MongoDB in May 2019TranswarpVelocityDB Inc
Initial release201020142011
Current release7.x
License infoCommercial or Open SourcecommercialOpen Sourcecommercialcommercial
Cloud-based only infoOnly available as a cloud serviceyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageErlangC#
Server operating systemshostedAndroid
Backend: server-less
iOS
Windows
Any that supports .NET
Data schemeschema-freeyesyes
Typing infopredefined data types such as float or datenoyesyes
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 indexesyesyesyes
SQL infoSupport of SQLnonoSQL-like query languageno
APIs and other access methodsRESTful HTTP/JSON APIOpenCypher.Net
Supported programming languagesC#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
Java infowith Android only
Objective-C
React Native
Swift
.Net
Server-side scripts infoStored proceduresView functions (Map-Reduce) in JavaScriptno inforuns within the applications so server-side scripts are unnecessaryno
Triggersyesyes infoChange ListenersCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingnonehorizontal partitioningSharding
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 possibleACIDACID
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic lockingyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes infoIn-Memory realmyes
User concepts infoAccess controlAccess rights for users can be defined per databaseyesyesBased on Windows Authentication

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More resources
IBM CloudantRealmTranswarp StellarDBVelocityDB
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