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DBMS > LokiJS vs. Oracle Coherence vs. VelocityDB

System Properties Comparison LokiJS vs. Oracle Coherence vs. VelocityDB

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Editorial information provided by DB-Engines
NameLokiJS  Xexclude from comparisonOracle Coherence  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionIn-memory JavaScript DBMSOracles in-memory data grid solutionA .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
Score0.48
Rank#262  Overall
#42  Document stores
Score2.02
Rank#131  Overall
#22  Key-value stores
Score0.11
Rank#347  Overall
#35  Graph DBMS
#15  Object oriented DBMS
Websitegithub.com/­techfort/­LokiJSwww.oracle.com/­java/­coherencevelocitydb.com
Technical documentationtechfort.github.io/­LokiJSdocs.oracle.com/­en/­middleware/­standalone/­coherencevelocitydb.com/­UserGuide
DeveloperOracleVelocityDB Inc
Initial release201420072011
Current release14.1, August 20237.x
License infoCommercial or Open SourceOpen Sourcecommercialcommercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaScriptJavaC#
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)All OS with a Java VMAny that supports .NET
Data schemeschema-freeschema-freeyes
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 indexesyes infovia viewsnoyes
SQL infoSupport of SQLnonono
APIs and other access methodsJavaScript APIJCache
JPA
RESTful HTTP API
.Net
Supported programming languagesJavaScript.Net
C++
Java
.Net
Server-side scripts infoStored proceduresView functions in JavaScriptnono
Triggersyesyes infoLive EventsCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyes, with selectable consistency level
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single collection possibleconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyes
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 infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes
User concepts infoAccess controlnoauthentification to access the cache via certificates or http basic authenticationBased on Windows Authentication

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More resources
LokiJSOracle CoherenceVelocityDB
DB-Engines blog posts

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