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DBMS > JSqlDb vs. KairosDB vs. VelocityDB vs. Yaacomo

System Properties Comparison JSqlDb vs. KairosDB vs. VelocityDB vs. Yaacomo

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Editorial information provided by DB-Engines
NameJSqlDb  Xexclude from comparisonKairosDB  Xexclude from comparisonVelocityDB  Xexclude from comparisonYaacomo  Xexclude from comparison
JSqlDB seems to be discontinued. Therefore it is excluded from the DB-Engines ranking.Yaacomo seems to be discontinued and is removed from the DB-Engines ranking
DescriptionJavaScript Query Language Database, stores JavaScript objects and primitivesDistributed Time Series DBMS based on Cassandra or H2A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)OpenCL based in-memory RDBMS, designed for efficiently utilizing the hardware via parallel computing
Primary database modelDocument store
Object oriented DBMS
Time Series DBMSGraph DBMS
Object oriented DBMS
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.62
Rank#239  Overall
#20  Time Series DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitejsqldb.org (offline)github.com/­kairosdb/­kairosdbvelocitydb.comyaacomo.com
Technical documentationkairosdb.github.iovelocitydb.com/­UserGuide
DeveloperKonrad von BackstromVelocityDB IncQ2WEB GmbH
Initial release2018201320112009
Current release0.8, December 20181.2.2, November 20187.x
License infoCommercial or Open SourceOpen SourceOpen Source infoApache 2.0commercialcommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC#
Server operating systemsLinux
macOS
Windows
Linux
OS X
Windows
Any that supports .NETAndroid
Linux
Windows
Data schemeschema-freeschema-freeyesyes
Typing infopredefined data types such as float or datenoyesyesyes
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 indexesnonoyesyes
SQL infoSupport of SQLnononoyes
APIs and other access methodsGraphite protocol
HTTP REST
Telnet API
.NetJDBC
ODBC
Supported programming languagesJavaScriptJava
JavaScript infoNode.js
PHP
Python
.Net
Server-side scripts infoStored proceduresfunctions in JavaScriptnono
TriggersnonoCallbacks are triggered when data changesyes
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infobased on CassandraShardinghorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesnoneselectable replication factor infobased on CassandraSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infousing RocksDByesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes
User concepts infoAccess controlsimple password-based access controlBased on Windows Authenticationfine grained access rights according to SQL-standard

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More resources
JSqlDbKairosDBVelocityDBYaacomo
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