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DBMS > LokiJS vs. Riak KV vs. Sadas Engine vs. VelocityDB

System Properties Comparison LokiJS vs. Riak KV vs. Sadas Engine vs. VelocityDB

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Editorial information provided by DB-Engines
NameLokiJS  Xexclude from comparisonRiak KV  Xexclude from comparisonSadas Engine  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionIn-memory JavaScript DBMSDistributed, fault tolerant key-value storeSADAS Engine is a columnar DBMS specifically designed for high performance in Data warehouse environmentsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument storeKey-value store infowith links between data sets and object tags for the creation of secondary indexesRelational DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.57
Rank#228  Overall
#34  Document stores
Score6.63
Rank#64  Overall
#8  Key-value stores
Score0.00
Rank#354  Overall
#152  Relational DBMS
Score0.03
Rank#336  Overall
#35  Graph DBMS
#17  Object oriented DBMS
Websitegithub.com/­techfort/­LokiJSriak.com/­products/­riak-kvwww.sadasengine.comvelocitydb.com
Technical documentationtechfort.github.io/­LokiJSwww.sadasengine.com/­index.php/­downloads/­documentation-columnar-dbvelocitydb.com/­UserGuide
DeveloperBasho TechnologiesSADAS s.r.l.VelocityDB Inc
Initial release2014200920062011
Current release2.1.0, April 20158.07.x
License infoCommercial or Open SourceOpen SourceOpen Source infoApache version 2, commercial enterprise editioncommercial infofree trial version availablecommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaScriptErlangC++C#
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)Linux
OS X
AIX
Linux
Windows
Any that supports .NET
Data schemeschema-freeschema-freeyesyes
Typing infopredefined data types such as float or datenonoyesyes
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.nononono
Secondary indexesyes infovia viewsrestrictedyesyes
SQL infoSupport of SQLnonoyesno
APIs and other access methodsJavaScript APIHTTP API
Native Erlang Interface
JDBC
ODBC
Proprietary protocol
.Net
Supported programming languagesJavaScriptC infounofficial client library
C#
C++ infounofficial client library
Clojure infounofficial client library
Dart infounofficial client library
Erlang
Go infounofficial client library
Groovy infounofficial client library
Haskell infounofficial client library
Java
JavaScript infounofficial client library
Lisp infounofficial client library
Perl infounofficial client library
PHP
Python
Ruby
Scala infounofficial client library
Smalltalk infounofficial client library
.Net
C
C#
C++
Groovy
Java
PHP
Python
.Net
Server-side scripts infoStored proceduresView functions in JavaScriptJavaScript and Erlangnono
Triggersyesyes infopre-commit hooks and post-commit hooksnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infono "single point of failure"horizontal partitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneselectable replication factornone
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynono infolinks between data sets can be storedyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single collection possiblenoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.yesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes infomanaged by 'Learn by Usage'yes
User concepts infoAccess controlnonoAccess rights for users, groups and roles according to SQL-standardBased on Windows Authentication

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More resources
LokiJSRiak KVSadas EngineVelocityDB
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