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DBMS > TerminusDB vs. VelocityDB vs. VoltDB

System Properties Comparison TerminusDB vs. VelocityDB vs. VoltDB

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Editorial information provided by DB-Engines
NameTerminusDB infoformer name was DataChemist  Xexclude from comparisonVelocityDB  Xexclude from comparisonVoltDB  Xexclude from comparison
DescriptionScalable Graph Database platform making enterprise data available by exploiting inferred entities and relationshipsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)Distributed In-Memory NewSQL RDBMS infoUsed for OLTP applications with a high frequency of relatively simple transactions, that can hold all their data in memory
Primary database modelGraph DBMSGraph DBMS
Object oriented DBMS
Relational DBMS
Secondary database modelsDocument store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.02
Rank#342  Overall
#32  Graph DBMS
Score0.07
Rank#311  Overall
#30  Graph DBMS
#16  Object oriented DBMS
Score1.71
Rank#116  Overall
#59  Relational DBMS
Websiteterminusdb.comvelocitydb.comwww.voltdb.com
Technical documentationterminusdb.com/­docsvelocitydb.com/­UserGuidedocs.voltdb.com
DeveloperDataChemist Ltd.VelocityDB IncVoltDB Inc.
Initial release201820112010
Current release1.0, 20187.x9.0, April 2019
License infoCommercial or Open SourceOpen Source infoGPL V3commercialOpen Source infoAGPL for Community Edition, commercial license for Enterprise, AWS, and Pro Editions
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageProlog, RustC#Java, C++
Server operating systemsLinuxAny that supports .NETLinux
OS X infofor development
Data schemeyesyesyes
Typing infopredefined data types such as float or dateyesyesyes
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 indexesyesyes
SQL infoSupport of SQLSQL-like query language (WOQL)noyes infoonly a subset of SQL 99
APIs and other access methodsOWL
RESTful HTTP API
WOQL (Web Object Query Language)
.NetJava API
RESTful HTTP/JSON API
JDBC
Supported programming languagesJavaScript
Python
.NetC#
C++
Erlang infonot officially supported
Go
Java
JavaScript infoNode.js
PHP
Python
Server-side scripts infoStored proceduresyesnoJava
TriggersyesCallbacks are triggered when data changesno
Partitioning methods infoMethods for storing different data on different nodesGraph PartitioningShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesJournaling StreamsMaster-master replication
Master-slave replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integrityyesnono infoFOREIGN KEY constraints are not supported
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDACID infoTransactions are executed single-threaded within stored procedures
Concurrency infoSupport for concurrent manipulation of datayesyesyes infoData access is serialized by the server
Durability infoSupport for making data persistentyes infoin-memory journalingyesyes infoSnapshots and command logging
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlRole-based access controlBased on Windows AuthenticationUsers and roles with access to stored procedures

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More resources
TerminusDB infoformer name was DataChemistVelocityDBVoltDB
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