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DBMS > AllegroGraph vs. etcd vs. VelocityDB

System Properties Comparison AllegroGraph vs. etcd vs. VelocityDB

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Editorial information provided by DB-Engines
NameAllegroGraph  Xexclude from comparisonetcd  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionHigh performance, persistent RDF store with additional support for Graph DBMSA distributed reliable key-value storeA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument store infowith version 6.5
Graph DBMS
RDF store
Key-value storeGraph DBMS
Object oriented DBMS
Secondary database modelsSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.23
Rank#156  Overall
#27  Document stores
#14  Graph DBMS
#7  RDF stores
Score10.96
Rank#46  Overall
#5  Key-value stores
Score0.04
Rank#324  Overall
#32  Graph DBMS
#18  Object oriented DBMS
Websiteallegrograph.cometcd.io
github.com/­etcd-io/­etcd
velocitydb.com
Technical documentationfranz.com/­agraph/­support/­documentation/­current/­agraph-introduction.htmletcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
velocitydb.com/­UserGuide
DeveloperFranz Inc.VelocityDB Inc
Initial release20042011
Current release7.2, October 20213.4, August 20197.x
License infoCommercial or Open Sourcecommercial infoLimited community edition freeOpen Source infoApache Version 2.0commercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoC#
Server operating systemsLinux
OS X
Windows
FreeBSD
Linux
Windows infoexperimental
Any that supports .NET
Data schemeyes infoRDF schemasschema-freeyes
Typing infopredefined data types such as float or dateyesnoyes
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.no infobulk load of XML files possiblenono
Secondary indexesyesnoyes
SQL infoSupport of SQLSPARQL is used as query languagenono
APIs and other access methodsRESTful HTTP API
SPARQL
gRPC
JSON over HTTP
.Net
Supported programming languagesC#
Clojure
Java
Lisp
Perl
Python
Ruby
Scala
.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
.Net
Server-side scripts infoStored proceduresyes infoJavaScript or Common Lispnono
Triggersyesyes, watching key changesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodeswith FederationSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency or Eventual Consistency depending on configurationImmediate 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 persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes
User concepts infoAccess controlUsers with fine-grained authorization concept, user roles and pluggable authenticationnoBased on Windows Authentication
More information provided by the system vendor
AllegroGraphetcdVelocityDB
Specific characteristicsKnowledge Graph Platform Leader FedShard - Designed for Entity-Event Knowledge Graph...
» more
Competitive advantagesAllegroGraph is uniquely suited to support adhoc queries through SPARQL, Prolog and...
» more
News

Franz’s AllegroGraph Name “Best Knowledge Graph” by KMWorld Readers’ Choice
8 November 2021

AllegroGraph v7.2 – Now Available (GNN, Virtual Graphs, Spark, and Kafka)
25 October 2021

Fuse Graph Neural Networks with Semantic Reasoning to Produce Complimentary Predictions
25 September 2021

Essilor’s Knowledge Graph for Global Supply Chain Risk Management
14 September 2021

No-Code Queries Can Accelerate AI and Data Analytics
1 September 2021

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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
AllegroGraphetcdVelocityDB
Recent citations in the news

AiThority Interview with Dr. Jans Aasman, CEO at Franz
1 July 2021, AiThority

Franz’s AllegroGraph Name “Best Knowledge Graph” by KMWorld Readers’ Choice
9 November 2021, EIN News

Knowledge graph insights from KMWorld Connect 2021
24 November 2021, KMWorld Magazine

2022 Trends in Artificial Intelligence and Machine Learning: Reasoning Meets Learning
5 November 2021, insideBIGDATA

Why Young Developers Don't Get Knowledge Graphs
30 July 2021, Datanami

provided by Google News

Learn to use Kubernetes CRDs in this tutorial example
30 November 2021, TechTarget

All about performance: etcd 3.5 looks to make Kubernetes users happy • DEVCLASS
17 June 2021, DevClass

Silver ETFs: Sebi issues final guidelines and here are five things you should know about them
24 November 2021, Moneycontrol.com

Sebi may allow FPIs to participate in commodity derivatives market
10 November 2021, Business Standard

Distributed Key-Value Store etcd Graduates at CNCF
29 November 2020, InfoQ.com

provided by Google News

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