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DBMS > Datomic

Datomic System Properties

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Editorial information provided by DB-Engines
NameDatomic
DescriptionDatomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durability
Database modelRelational DBMS
DB-Engines Ranking measures the popularity of database management systems
Trend Chart
Score1.80
Rank#94  Overall
#45  Relational DBMS
Websitewww.datomic.com
Technical documentationdocs.datomic.com
DeveloperCognitect
Initial release2012
Current release0.9
License Commercial or Open Sourcecommercial limited edition free
Cloud-based Only available as a cloud serviceno
Implementation languageJava, Clojure
Server operating systemsAll OS with a Java VM
Data schemeyes
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
Secondary indexesyes
SQL Support of (almost full) SQL standard (DML, DDL and DCL statements)no
APIs and other access methodsRESTful HTTP API
Supported programming languagesClojure
Java
Server-side scripts Stored proceduresyes Transaction Functions
TriggersBy using transaction functions
Partitioning methods Methods for storing different data on different nodesnone But extensive use of caching in the application peers
Replication methods Methods for redundantly storing data on multiple nodesnone But extensive use of caching in the application peers
MapReduce Offers an API for user-defined Map/Reduce methodsno
Consistency concepts Methods to ensure consistency in a distributed systemImmediate Consistency
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 using external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.yes recommended only for testing and development
User concepts Access controlno

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More resources
Datomic
Recent citations in the news

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