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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
Database modelGraph DBMS
RDF store
DB-Engines Ranking measures the popularity of database management systems
Trend Chart
Score0.60
Rank#157  Overall
#8  Graph DBMS
#5  RDF stores
Websitewww.franz.com/­agraph/­allegrograph
Technical documentationfranz.com/­agraph/­support/­documentation/­current/­agraph-introduction.html
DeveloperFranz Inc.
Initial release2004
Current release6.2.0, February 2017
License Commercial or Open Sourcecommercial Limited community edition free
Cloud-based Only available as a cloud serviceno
Server operating systemsLinux
OS X
Windows
Data schemeyes RDF schemas
Typing predefined data types such as float or dateyes
XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.no bulk load of XML files possible
Secondary indexesyes
SQL Support of (almost entire) SQL standard (DML, DDL and DCL statements)no SPARQL
APIs and other access methodsRESTful HTTP API
SPARQL
Supported programming languagesC#
Clojure
Java
Lisp
Perl
Python
Ruby
Scala
Server-side scripts Stored proceduresyes JavaScript or Common Lisp
Triggersyes
Partitioning methods Methods for storing different data on different nodeswith Federation
Replication methods Methods for redundantly storing data on multiple nodesMaster-slave replication
MapReduce Offers an API for user-defined Map/Reduce methodsno
Consistency concepts Methods to ensure consistency in a distributed systemImmediate Consistency or Eventual Consistency depending on configuration
Foreign keys Referential integrityno
Transaction concepts Support to ensure data integrity after non-atomic manipulations of dataACID
Concurrency Support for concurrent manipulation of datayes
Durability Support for making data persistentyes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.no
User concepts Access controlUsers with fine-grained authorization concept, user roles and pluggable authentication
More information provided by the system vendor
AllegroGraph
Specific characteristics
  • AllegroGraph is 100 percent ACID, supporting Transactions: Commit, Rollback, and Checkpointing.

  • Triple Level Security with Security Filters

  • Gruff - Graph Visualization, Generate SPARQL and Prolog queries visually.

  • AllegroGraph server can be scripted using the JavaScript API

  • Full and Fast Recoverability

  • 100% Read Concurrency, Near Full Write Concurrency

  • Online BackupsPoint-in-Time RecoveryReplication, Warm Standby

  • Dynamic and Automatic Indexing – All committed triples are always indexed (7 indices)

  • Advanced Text Indexing – Text indexing per predicate

  • SOLR and MongoDB Integration

  • SPIN support (SPARQL Inferencing Notation). The SPIN API allows you to define a function in terms of a SPARQL query and then call that function in other SPARQL queries. These SPIN functions can appear in FILTERs and can also be used to compute values in assignment and select expressions.

  • All Clients based on REST Protocol – Java SesameJava JenaPythonC#ClojurePerlRubyScala, and Lisp clients

  • Completely multi-processing based (SMP) – Automatic Resource Management for all processors and disks, and optimized memory use. See the performance tuning guide here, and server configuration guide here

  • Column-based compression of indices – reduced paging, better performance

  • Cloud-Hosted AllegroGraph - Amazon EC2

  • JavaScript-based interface (JIG) for general graph traversal

Competitive advantages

​​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

Bloor Research Positions Franz’s AllegroGraph as a ‘Champion’ and Highest Ranked in Graph Database Market
28 March 2017

AllegroGraph v6.2 - Now Available
21 February 2017

#AllegroGraph News - February 2017
1 February 2017

#AllegroGraph News - October 2016
4 October 2016

The Power of Cognitive Probability Graphs
20 June 2016

3rd party products and services

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More resources
AllegroGraph
Recent citations in the news

Lead Semantics and Franz Inc. Announce Collaboration and Development Partnership
31 January 2017, PR Web (press release)

Franz Inc.'s AllegroGraph 6 to be Available on Cloudera Certified Technology Program
24 February 2016, CIOReview (press release)

Franz's Allegro Common Lisp Meets Demand for High Performance Artificial Intelligence and IoT Applications
25 April 2017, PR Web (press release)

AllegroGraph Certification on Cloudera Enterprise Creates a Semantic Graph Data Platform for Hadoop
8 February 2016, PR Web (press release)

AllegroGraph Recognized Among Top 10 Analytics Solution Providers by Pharma Tech Outlook
28 January 2016, PR Web (press release)

provided by Google News

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