DBMS > Heroic vs. Stardog
System Properties Comparison Heroic vs. Stardog
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|Editorial information provided by DB-Engines|
|Name||Heroic Xexclude from comparison||Stardog Xexclude from comparison|
|Description||Time Series DBMS built at Spotify based on Cassandra or Google Cloud Bigtable, and ElasticSearch||Semantic graph DBMS, developed in Java|
|Primary database model||Time Series DBMS||Graph DBMS|
|Current release||4.2.4, March 2017|
|License Commercial or Open Source||Open Source Apache 2.0||commercial Limited community edition free|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||All OS with a Java VM|
|Typing predefined data types such as float or date||yes||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||yes via Elasticsearch||yes|
|SQL Support of SQL||no||SPARQL is used as query language|
|APIs and other access methods||HQL (Heroic Query Language, a JSON-based language)|
Tinkerpop technology stack with Blueprints, Gremlin, Pipes
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||no||no|
|Triggers||no||yes via event handlers|
|Partitioning methods Methods for storing different data on different nodes||Sharding||none|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||Master-master replication in HA-Cluster using Apache ZooKeeper|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency|
|Immediate Consistency in HA-Cluster|
|Foreign keys Referential integrity||no||yes relationships in graphs|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes|
|User concepts Access control||Access rights for users and roles|
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