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DBMS > SQL.JS vs. ToroDB vs. VelocityDB

System Properties Comparison SQL.JS vs. ToroDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameSQL.JS  Xexclude from comparisonToroDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
ToroDB seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
DescriptionPort of SQLite to JavaScriptA MongoDB-compatible JSON document store, built on top of PostgreSQLA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelRelational DBMSDocument storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.53
Rank#252  Overall
#116  Relational DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitesql.js.orggithub.com/­torodb/­servervelocitydb.com
Technical documentationsql.js.org/­documentation/­index.htmlvelocitydb.com/­UserGuide
DeveloperAlon Zakai infoenhancements implemented by others8KdataVelocityDB Inc
Initial release201220162011
Current release7.x
License infoCommercial or Open SourceOpen SourceOpen Source infoAGPL-V3commercial
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 7 VMAny that supports .NET
Data schemeyesschema-freeyes
Typing infopredefined data types such as float or dateyesyes infostring, integer, double, boolean, date, object_idyes
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
SQL infoSupport of SQLyes infoSQL-92 is not fully supportedno
APIs and other access methodsJavaScript API.Net
Supported programming languagesJavaScript.Net
Server-side scripts infoStored proceduresnono
TriggersnonoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentno infoexcept by serializing a db to a fileyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlnoAccess rights for users and rolesBased on Windows Authentication

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More resources
SQL.JSToroDBVelocityDB
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