DBMS > AlaSQL vs. Blazegraph vs. Stardog
System Properties Comparison AlaSQL vs. Blazegraph vs. Stardog
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|Editorial information provided by DB-Engines|
|Name||AlaSQL Xexclude from comparison||Blazegraph Xexclude from comparison||Stardog Xexclude from comparison|
|Amazon has acquired Blazegraph's domain and (probably) product. It is said that Amazon Neptune is based on Blazegraph.|
|Primary database model||Document store|
|Developer||Andrey Gershun & Mathias R. Wulff||Blazegraph||Stardog-Union|
|Current release||2.1.5, March 2019||7.3.0, May 2020|
|License Commercial or Open Source||Open Source MIT-License||Open Source extended commercial license available||commercial 60-day fully-featured trial license; 1-year fully-featured non-commercial use license for academics/students|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Data scheme||schema-free||schema-free||schema-free and OWL/RDFS-schema support|
|Typing predefined data types such as float or date||no||yes RDF literal types||yes|
|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||no Import/export of XML data possible|
|Secondary indexes||no||yes||yes supports real-time indexing in full-text and geospatial|
|SQL Support of SQL||Close to SQL99, but no user access control, stored procedures and host language bindings.||SPARQL is used as query language||Yes, compatible with all major SQL variants through dedicated BI/SQL Server|
RESTful HTTP API
|GraphQL query language|
Jena RDF API
Sesame REST HTTP Protocol
|Server-side scripts Stored procedures||no||yes||user defined functions and aggregates, HTTP Server extensions in Java|
|Triggers||yes||no||yes via event handlers|
|Partitioning methods Methods for storing different data on different nodes||none||Sharding||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none||yes||Master-master replication in HA-Cluster|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||none||Immediate Consistency or Eventual Consistency depending on configuration||Immediate Consistency in HA-Cluster|
|Foreign keys Referential integrity||yes||yes Relationships in Graphs||yes relationships in graphs|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||yes only for local storage and DOM-storage||ACID||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes by using IndexedDB, SQL.JS or proprietary FileStorage||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes|
|User concepts Access control||no||Security and Authentication via Web Application Container (Tomcat, Jetty)||Access rights for users and roles|
|More information provided by the system vendor|
|Specific characteristics||Stardog is an Enterprise Knowledge Graph platform, uniquely combining graph storage...|
|Competitive advantages||Stardog provides a full featureset to aid in data integration for your complex data....|
|Typical application scenarios||Stardog is frequently used for: Anti-money laundering & fraud monitoring Customer...|
|Key customers||Bosch, Dow Jones, Elsevier, Ericsson, Morgan Stanley, NASA, NIH, Nokia, Salesforce,...|
|Market metrics||Stardog's technology is based on ground-breaking research by our founders cited 10,000+...|
|Licensing and pricing models||A fully-featured 60-day Trial license is available for those testing Stardog; contact...|
Blazegraph 2.1.4 Release
Blazegraph 2.1.2 Release
Blazegraph 2.1.1 Release!
Blazegraph 2.1.0 Release!
Blazegraph 2.0.0 Release!
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