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DBMS > FoundationDB vs. TerminusDB vs. VelocityDB

System Properties Comparison FoundationDB vs. TerminusDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameFoundationDB  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonVelocityDB  Xexclude from comparison
Created as commercial project in 2013, FoundationDB has been acquired by Apple in March 2015 and was withdrawn from the market. As a consequence, the product was removed from the DB-Engines ranking. In April 2018, Apple open-sourced FoundationDB and it therefore reappears in the ranking.
DescriptionOrdered key-value store. Core features are complimented by layers.Scalable 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)
Primary database modelDocument store infosupported via specific layer
Key-value store
Relational DBMS infosupported via specific SQL-layer
Graph DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsDocument store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.77
Rank#166  Overall
#23  Document stores
#28  Key-value stores
#83  Relational DBMS
Score0.02
Rank#342  Overall
#32  Graph DBMS
Score0.07
Rank#311  Overall
#30  Graph DBMS
#16  Object oriented DBMS
Websitewww.foundationdb.orgterminusdb.comvelocitydb.com
Technical documentationapple.github.io/­foundationdbterminusdb.com/­docsvelocitydb.com/­UserGuide
DeveloperFoundationDBDataChemist Ltd.VelocityDB Inc
Initial release201320182011
Current release6.1.11, July 20191.0, 20187.x
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoGPL V3commercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++Prolog, RustC#
Server operating systemsLinux
OS X
Windows
LinuxAny that supports .NET
Data schemeschema-free infosome layers support schemasyesyes
Typing infopredefined data types such as float or dateno infosome layers support typingyesyes
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 indexesnoyes
SQL infoSupport of SQLsupported in specific SQL layer onlySQL-like query language (WOQL)no
APIs and other access methodsOWL
RESTful HTTP API
WOQL (Web Object Query Language)
.Net
Supported programming languages.Net
C
C++
Go
Java
JavaScript infoNode.js
PHP
Python
Ruby
Swift
JavaScript
Python
.Net
Server-side scripts infoStored proceduresin SQL-layer onlyyesno
TriggersnoyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingGraph PartitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyesJournaling Streams
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemLinearizable consistencyImmediate Consistency
Foreign keys infoReferential integrityin SQL-layer onlyyesno
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 persistentyesyes infoin-memory journalingyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlnoRole-based access controlBased on Windows Authentication

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More resources
FoundationDBTerminusDB infoformer name was DataChemistVelocityDB
Recent citations in the news

Appleā€™s FoundationDB open sources the database layer behind CloudKit
14 January 2019, 9to5Mac

FoundationDB's Record Layer Supports Relational Database Semantics, Schema Management and Indexing
10 February 2019, InfoQ.com

FoundationDB, a very interesting NoSQL database owned by Apple, is now an open-source project
19 April 2018, GeekWire

FoundationDB Goes Open Source
23 April 2018, Datanami

Apple's FoundationDB to use new Record Layer Open Source
15 January 2019, TheCryptoUpdates

provided by Google News

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