DBMS > Atos Standard Common Repository vs. etcd vs. Hawkular Metrics vs. OushuDB

System Properties Comparison Atos Standard Common Repository vs. etcd vs. Hawkular Metrics vs. OushuDB

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Editorial information provided by DB-Engines
Name	Atos Standard Common Repository  Xexclude from comparison	etcd  Xexclude from comparison	Hawkular Metrics  Xexclude from comparison	OushuDB  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	A distributed reliable key-value store	Hawkular metrics is the metric storage of the Red Hat sponsored Hawkular monitoring system. It is based on Cassandra.	A data warehouse powered by Apache HAWQ supporting descriptive analysis and advanced machine learning
Primary database model	Document store Key-value store	Key-value store	Time Series DBMS	Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart		Score 7.03 Rank #54   Overall #5   Key-value stores	Score 0.08 Rank #366   Overall #39   Time Series DBMS	Score 0.10 Rank #355   Overall #154   Relational DBMS
Website	atos.net/en/convergence-creators/portfolio/standard-common-repository	etcd.io github.com/­etcd-io/­etcd	www.hawkular.org	www.oushu.com/­product/­oushuDB
Technical documentation		etcd.io/­docs github.com/­etcd-io/­etcd/­tree/­master/­Documentation	www.hawkular.org/­hawkular-metrics/­docs/­user-guide	www.oushu.com/­documentation
Developer	Atos Convergence Creators		Community supported by Red Hat	Oushu
Initial release	2016		2014
Current release	1703	3.4, August 2019		4.0.1, August 2020
License Commercial or Open Source	commercial	Open Source Apache Version 2.0	Open Source Apache 2.0	commercial
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	Go	Java
Server operating systems	Linux	FreeBSD Linux Windows experimental	Linux OS X Windows	Linux
Data scheme	Schema and schema-less with LDAP views	schema-free	schema-free	yes
Typing predefined data types such as float or date	optional	no	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
Secondary indexes	yes	no	no	yes
SQL Support of SQL	no	no	no	Full-featured ANSI SQL support
APIs and other access methods	LDAP	gRPC JSON over HTTP	HTTP REST	JDBC ODBC
Supported programming languages	All languages with LDAP bindings	.Net C C++ Clojure Erlang Go Haskell Java JavaScript (Node.js) Perl PHP Python R Ruby Rust Scala Tcl	Go Java Python Ruby	C C++
Server-side scripts Stored procedures	no	no	no	yes
Triggers	yes	yes, watching key changes	yes via Hawkular Alerting	yes
Partitioning methods Methods for storing different data on different nodes	Sharding cell division		Sharding based on Cassandra	yes
Replication methods Methods for redundantly storing data on multiple nodes	yes	Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.	selectable replication factor based on Cassandra
MapReduce Offers an API for user-defined Map/Reduce methods		no	no	Hadoop integration
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
Foreign keys Referential integrity	no	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	Atomic execution of specific operations	no	no	ACID
Concurrency Support for concurrent manipulation of data	yes	yes	yes	yes
Durability Support for making data persistent	yes	yes	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes	no	no
User concepts Access control	LDAP bind authentication	no	no	Kerberos, SSL and role based access
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More resources
	Atos Standard Common Repository	etcd	Hawkular Metrics	OushuDB
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