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DBMS > Quasardb vs. VelocityDB

System Properties Comparison Quasardb vs. VelocityDB

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Editorial information provided by DB-Engines
NameQuasardb  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionDistributed, high-performance timeseries databaseA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.11
Rank#331  Overall
#28  Time Series DBMS
Score0.00
Rank#381  Overall
#40  Graph DBMS
#20  Object oriented DBMS
Websitequasar.aivelocitydb.com
Technical documentationdoc.quasar.ai/­mastervelocitydb.com/­UserGuide
DeveloperquasardbVelocityDB Inc
Initial release20092011
Current release3.14.1, January 20247.x
License infoCommercial or Open Sourcecommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licensescommercial
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++C#
Server operating systemsBSD
Linux
OS X
Windows
Any that supports .NET
Data schemeschema-freeyes
Typing infopredefined data types such as float or dateyes infointeger and binaryyes
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 infowith tagsyes
SQL infoSupport of SQLSQL-like query languageno
APIs and other access methodsHTTP API.Net
Supported programming languages.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
.Net
Server-side scripts infoStored proceduresnono
TriggersnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infoconsistent hashingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replication with selectable replication factor
MapReduce infoOffers an API for user-defined Map/Reduce methodswith Hadoop integrationno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentyes infoby using LevelDByes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoTransient modeyes
User concepts infoAccess controlCryptographically strong user authentication and audit trailBased on Windows Authentication

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More resources
QuasardbVelocityDB
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