DBMS > Atos Standard Common Repository vs. Datomic vs. Hawkular Metrics vs. SiteWhere

System Properties Comparison Atos Standard Common Repository vs. Datomic vs. Hawkular Metrics vs. SiteWhere

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Editorial information provided by DB-Engines
Name	Atos Standard Common Repository  Xexclude from comparison	Datomic  Xexclude from comparison	Hawkular Metrics  Xexclude from comparison	SiteWhere  Xexclude from comparison
	This system has been discontinued and will be removed from the DB-Engines ranking.
Description	Highly scalable database system, designed for managing session and subscriber data in modern mobile communication networks	Datomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durability	Hawkular metrics is the metric storage of the Red Hat sponsored Hawkular monitoring system. It is based on Cassandra.	M2M integration platform for persisting/querying time series data
Primary database model	Document store Key-value store	Relational DBMS	Time Series DBMS	Time Series DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart		Score 1.66 Rank #144   Overall #66   Relational DBMS	Score 0.08 Rank #366   Overall #39   Time Series DBMS	Score 0.06 Rank #383   Overall #43   Time Series DBMS
Website	atos.net/en/convergence-creators/portfolio/standard-common-repository	www.datomic.com	www.hawkular.org	github.com/­sitewhere/­sitewhere
Technical documentation		docs.datomic.com	www.hawkular.org/­hawkular-metrics/­docs/­user-guide	sitewhere1.sitewhere.io/­index.html
Developer	Atos Convergence Creators	Cognitect	Community supported by Red Hat	SiteWhere
Initial release	2016	2012	2014	2010
Current release	1703	1.0.7075, December 2023
License Commercial or Open Source	commercial	commercial limited edition free	Open Source Apache 2.0	Open Source Common Public Attribution License Version 1.0
Cloud-based only Only available as a cloud service	no	no	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	Java	Java, Clojure	Java	Java
Server operating systems	Linux	All OS with a Java VM	Linux OS X Windows	Linux OS X Windows
Data scheme	Schema and schema-less with LDAP views	yes	schema-free	predefined scheme
Typing predefined data types such as float or date	optional	yes	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.	yes	no	no	no
Secondary indexes	yes	yes	no	no
SQL Support of SQL	no	no	no	no
APIs and other access methods	LDAP	RESTful HTTP API	HTTP REST	HTTP REST
Supported programming languages	All languages with LDAP bindings	Clojure Java	Go Java Python Ruby
Server-side scripts Stored procedures	no	yes Transaction Functions	no
Triggers	yes	By using transaction functions	yes via Hawkular Alerting
Partitioning methods Methods for storing different data on different nodes	Sharding cell division	none But extensive use of caching in the application peers	Sharding based on Cassandra	Sharding based on HBase
Replication methods Methods for redundantly storing data on multiple nodes	yes	none But extensive use of caching in the application peers	selectable replication factor based on Cassandra	selectable replication factor based on HBase
MapReduce Offers an API for user-defined Map/Reduce methods		no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency or Eventual Consistency depending on configuration	Immediate Consistency	Eventual Consistency based on Cassandra Immediate Consistency based on Cassandra	Immediate Consistency
Foreign keys Referential integrity	no	no	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	Atomic execution of specific operations	ACID	no	no
Concurrency Support for concurrent manipulation of data	yes	yes	yes	yes
Durability Support for making data persistent	yes	yes using external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes	yes recommended only for testing and development	no	no
User concepts Access control	LDAP bind authentication	no	no	Users with fine-grained authorization concept
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More resources
	Atos Standard Common Repository	Datomic	Hawkular Metrics	SiteWhere
Recent citations in the news		Stanchion Turns SQLite Into A Column Store 15 February 2024, iProgrammer Nubank buys firm behind Clojure programming language 28 July 2020, Finextra Architecting Software for Leverage 13 November 2021, InfoQ.com TerminusDB Takes on Data Collaboration with a git-Like Approach 1 December 2020, The New Stack Brazil’s Nubank acquires US software firm Cognitect, creator of Clojure and Datomic 24 July 2020, LatamList provided by Google News	Waiting for Red Hat OpenShift 4.0? Too late, 4.1 has already arrived… • DEVCLASS 5 June 2019, DevClass provided by Google News	SiteWhere: An open platform for connected devices 11 July 2017, Open Source For You 11 Best Open source IoT Platforms To Develop Smart Projects 9 March 2023, H2S Media provided by Google News

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