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DBMS > Quasardb vs. RDFox vs. Sadas Engine vs. VelocityDB

System Properties Comparison Quasardb vs. RDFox vs. Sadas Engine vs. VelocityDB

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Editorial information provided by DB-Engines
NameQuasardb  Xexclude from comparisonRDFox  Xexclude from comparisonSadas Engine  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionDistributed, high-performance timeseries databaseHigh performance knowledge graph and semantic reasoning engineSADAS Engine is a columnar DBMS specifically designed for high performance in data warehouse environmentsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSGraph DBMS
RDF store
Relational DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.14
Rank#332  Overall
#29  Time Series DBMS
Score0.23
Rank#308  Overall
#25  Graph DBMS
#14  RDF stores
Score0.00
Rank#383  Overall
#158  Relational DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitequasar.aiwww.oxfordsemantic.techwww.sadasengine.comvelocitydb.com
Technical documentationdoc.quasar.ai/­masterdocs.oxfordsemantic.techwww.sadasengine.com/­en/­sadas-engine-download-free-trial-and-documentation/­#documentationvelocitydb.com/­UserGuide
DeveloperquasardbOxford Semantic TechnologiesSADAS s.r.l.VelocityDB Inc
Initial release2009201720062011
Current release3.14.1, January 20246.0, Septermber 20228.07.x
License infoCommercial or Open Sourcecommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licensescommercialcommercial infofree trial version availablecommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++C++C++C#
Server operating systemsBSD
Linux
OS X
Windows
Linux
macOS
Windows
AIX
Linux
Windows
Any that supports .NET
Data schemeschema-freeyes infoRDF schemasyesyes
Typing infopredefined data types such as float or dateyes infointeger and binaryyesyesyes
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 infowith tagsyesyes
SQL infoSupport of SQLSQL-like query languagenoyesno
APIs and other access methodsHTTP APIRESTful HTTP API
SPARQL 1.1
JDBC
ODBC
Proprietary protocol
.Net
Supported programming languages.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
C
Java
.Net
C
C#
C++
Groovy
Java
PHP
Python
.Net
Server-side scripts infoStored proceduresnonono
TriggersnonoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infoconsistent hashinghorizontal partitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replication with selectable replication factorreplication via a shared file systemnone
MapReduce infoOffers an API for user-defined Map/Reduce methodswith Hadoop integrationnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency in stand-alone mode, Eventual Consistency in replicated setupsImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infoby using LevelDByesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoTransient modeyesyes infomanaged by 'Learn by Usage'yes
User concepts infoAccess controlCryptographically strong user authentication and audit trailRoles, resources, and access typesAccess rights for users, groups and roles according to SQL-standardBased on Windows Authentication

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More resources
QuasardbRDFoxSadas EngineVelocityDB
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