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DBMS > AllegroGraph

AllegroGraph System Properties

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Editorial information provided by DB-Engines
NameAllegroGraph
DescriptionHigh performance, persistent RDF store with additional support for Graph DBMS
Primary database modelGraph DBMS
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.88
Rank#155  Overall
#10  Graph DBMS
#6  RDF stores
Websitefranz.com/­agraph/­allegrograph
Technical documentationfranz.com/­agraph/­support/­documentation/­current/­agraph-introduction.html
DeveloperFranz Inc.
Initial release2004
Current release6.5.0, March 2019
License infoCommercial or Open Sourcecommercial infoLimited community edition free
Cloud-based only infoOnly available as a cloud serviceno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Server operating systemsLinux
OS X
Windows
Data schemeyes infoRDF schemas
Typing infopredefined data types such as float or dateyes
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 possible
Secondary indexesyes
SQL infoSupport of SQLSPARQL is used as query language
APIs and other access methodsRESTful HTTP API
SPARQL
Supported programming languagesC#
Clojure
Java
Lisp
Perl
Python
Ruby
Scala
Server-side scripts infoStored proceduresyes infoJavaScript or Common Lisp
Triggersyes
Partitioning methods infoMethods for storing different data on different nodeswith Federation
Replication methods infoMethods for redundantly storing data on multiple nodesMaster-slave replication
Multi-master replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency or Eventual Consistency depending on configuration
Foreign keys infoReferential integrityno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACID
Concurrency infoSupport for concurrent manipulation of datayes
Durability infoSupport for making data persistentyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.no
User concepts infoAccess controlUsers with fine-grained authorization concept, user roles and pluggable authentication
More information provided by the system vendor
AllegroGraph
Specific characteristics

AllegroGraph is uniquely suited to support adhoc queries through SPARQL, Prolog and languages like JavaScript. AllegroGraph uses sorted quintuple indices that will index every primary and non-primary field. So users never have to worry about whether a certain field is indexed or not. There are 6 default indices that are in general sufficient for set based query index to execute almost any adhoc query.

One of the most powerful features of AllegroGraph is that it is possible to mix Geospatial, Temporal, Social Network Analytics, and Reasoning, all in the same query (SPARQL or Prolog). An example:

Find whether the most important friend of Sonya (using the SNA centrality statistic) made a payment within a 100 miles of Rotterdam, NY (using geospatial) within the last 10 years (temporal).

This would be impossible in any other graph database, RDF store, document store or Hadoop like solution in such a concise way.

  • AllegroGraph - Combines GeospatialTemporal, and SNA into a single Golden query.

  • W3C standards based query language and data format via SPARQL and RDF.

  • GRUFF - Data explorer, Graph Visualization, Graphical Query Generation

  • AllegroGraph has a built-in Rule Based System on top of an ISO compliant Prolog.  Users can write rules and stored procedures in Prolog and make them available to other rules and/or users.

  • Triple Level Security

  • True Durability in AllegroGraph - Many RDF and Graph DBMS systems to NOT write transaction logs for every transaciton, so in essence these databases are NOT durable.   Experiment - Perform multiple commits per second and run monitor "vmstat 1" to look at blocks in and out (column - io bi/bo).

News

Triple Attributes
2 May 2018

Allegro "Knowledge" Graph News - March 2018
7 March 2018

AllegroGraph v6.4 - Now Available
23 January 2018

AllegroGraph News - December 2017
20 December 2017

AllegroGraph News - November 2017
2 November 2017

Related products and services

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More resources
AllegroGraph
Conferences and events

Why is JSON-LD Important to Businesses?
Webinar, 10:00 AM - Pacific, 27 March 2019

Recent citations in the news

AllegroGraph 6.5, from Franz Inc., Marks First Multi-Model Semantic…
3 March 2019, Virtual-Strategy Magazine

Franz Updates AllegroGraph with the Ability to Ingest JSON and JSON-LD Documents
4 March 2019, Database Trends and Applications

When Graphs Collide: The Coming Merger Of Property And Semantic Graphs
18 March 2019, Forbes

Graph data standardization: It's just a graph, making gravitational waves in the real world
8 March 2019, ZDNet

Global Graph Database Market Competition by Manufacturers 2019 To 2025
18 March 2019, K N Hearld

provided by Google News

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