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DBMS > LokiJS vs. VelocityDB

System Properties Comparison LokiJS vs. VelocityDB

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Editorial information provided by DB-Engines
NameLokiJS  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionIn-memory JavaScript DBMSA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.54
Rank#232  Overall
#36  Document stores
Score0.01
Rank#348  Overall
#36  Graph DBMS
#18  Object oriented DBMS
Websitegithub.com/­techfort/­LokiJSvelocitydb.com
Technical documentationtechfort.github.io/­LokiJSvelocitydb.com/­UserGuide
DeveloperVelocityDB Inc
Initial release20142011
Current release7.x
License infoCommercial or Open SourceOpen Sourcecommercial
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaScriptC#
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)Any that supports .NET
Data schemeschema-freeyes
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.nono
Secondary indexesyes infovia viewsyes
SQL infoSupport of SQLnono
APIs and other access methodsJavaScript API.Net
Supported programming languagesJavaScript.Net
Server-side scripts infoStored proceduresView functions in JavaScriptno
TriggersyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneImmediate Consistency
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single collection possibleACID
Concurrency infoSupport for concurrent manipulation of datayes
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.yes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlnoBased on Windows Authentication

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More resources
LokiJSVelocityDB
DB-Engines blog posts

New kids on the block: database management systems implemented in JavaScript
1 December 2014, Matthias Gelbmann

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