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DBMS > Quasardb vs. STSdb vs. VelocityDB

System Properties Comparison Quasardb vs. STSdb vs. VelocityDB

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Editorial information provided by DB-Engines
NameQuasardb  Xexclude from comparisonSTSdb  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionDistributed, high-performance timeseries databaseKey-Value Store with special method for indexing infooptimized for high performance using a special indexing methodA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSKey-value storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.10
Rank#334  Overall
#28  Time Series DBMS
Score0.03
Rank#360  Overall
#54  Key-value stores
Score0.00
Rank#379  Overall
#40  Graph DBMS
#20  Object oriented DBMS
Websitequasar.aigithub.com/­STSSoft/­STSdb4velocitydb.com
Technical documentationdoc.quasar.ai/­mastervelocitydb.com/­UserGuide
DeveloperquasardbSTS Soft SCVelocityDB Inc
Initial release200920112011
Current release3.14.1, January 20244.0.8, September 20157.x
License infoCommercial or Open Sourcecommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licensesOpen Source infoGPLv2, commercial license availablecommercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++C#C#
Server operating systemsBSD
Linux
OS X
Windows
WindowsAny that supports .NET
Data schemeschema-freeyesyes
Typing infopredefined data types such as float or dateyes infointeger and binaryyes infoprimitive types and user defined types (classes)yes
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 tagsnoyes
SQL infoSupport of SQLSQL-like query languagenono
APIs and other access methodsHTTP API.NET Client API.Net
Supported programming languages.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
C#
Java
.Net
Server-side scripts infoStored proceduresnonono
TriggersnonoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infoconsistent hashingnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replication with selectable replication factornone
MapReduce infoOffers an API for user-defined Map/Reduce methodswith Hadoop integrationnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infoby using LevelDByesyes
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 trailnoBased on Windows Authentication

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More resources
QuasardbSTSdbVelocityDB
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