DBMS > CouchDB vs. Ehcache vs. SAP SQL Anywhere

System Properties Comparison CouchDB vs. Ehcache vs. SAP SQL Anywhere

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Editorial information provided by DB-Engines
Name	CouchDB stands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparison	Ehcache  Xexclude from comparison	SAP SQL Anywhere formerly called Adaptive Server Anywhere  Xexclude from comparison
Description	A native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.	A widely adopted Java cache with tiered storage options	RDBMS database and synchronization technologies for server, desktop, remote office, and mobile environments
Primary database model	Document store	Key-value store	Relational DBMS
Secondary database models	Spatial DBMS using the Geocouch extension
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 17.16 Rank #41   Overall #7   Document stores	Score 6.54 Rank #64   Overall #8   Key-value stores	Score 5.57 Rank #74   Overall #40   Relational DBMS
Website	couchdb.apache.org	www.ehcache.org	www.sap.com/­products/­sql-anywhere.html
Technical documentation	docs.couchdb.org/­en/­stable	www.ehcache.org/­documentation	help.sap.com/­sql-anywhere
Developer	Apache Software Foundation Apache top-level project, originally developed by Damien Katz, a former Lotus Notes developer	Terracotta Inc, owned by Software AG	SAP formerly Sybase
Initial release	2005	2009	1992
Current release	3.2.2, April 2022	3.9.6, September 2021	17, July 2015
License Commercial or Open Source	Open Source Apache version 2	Open Source Apache Version 2; commercial licenses available	commercial
Cloud-based only Only available as a cloud service	no	no	no
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Implementation language	Erlang	Java
Server operating systems	Android BSD Linux OS X Solaris Windows	All OS with a Java VM	AIX HP-UX Linux OS X Solaris Windows
Data scheme	schema-free	schema-free	yes
Typing predefined data types such as float or date	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.	no	no	yes
Secondary indexes	yes via views	no	yes
SQL Support of SQL	no	no	yes
APIs and other access methods	RESTful HTTP/JSON API	JCache	ADO.NET HTTP API JDBC ODBC
Supported programming languages	C C# ColdFusion Erlang Haskell Java JavaScript Lisp Lua Objective-C OCaml Perl PHP PL/SQL Python Ruby Smalltalk	Java	C C# C++ Delphi Java JavaScript (Node.js) Perl PHP Python Ruby
Server-side scripts Stored procedures	View functions in JavaScript	no	yes, in C/C++, Java, .Net or Perl
Triggers	yes	yes Cache Event Listeners	yes
Partitioning methods Methods for storing different data on different nodes	Sharding improved architecture with release 2.0	Sharding by using Terracotta Server	none
Replication methods Methods for redundantly storing data on multiple nodes	Multi-source replication Source-replica replication	yes by using Terracotta Server	Source-replica replication Database mirroring
MapReduce Offers an API for user-defined Map/Reduce methods	yes	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency	Tunable Consistency (Strong, Eventual, Weak)	Immediate Consistency
Foreign keys Referential integrity	no	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no atomic operations within a single document possible	yes supports JTA and can work as an XA resource	ACID
Concurrency Support for concurrent manipulation of data	yes strategy: optimistic locking	yes	yes
Durability Support for making data persistent	yes	yes using a tiered cache-storage approach	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	yes	yes
User concepts Access control	Access rights for users can be defined per database	no	fine grained access rights according to SQL-standard
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More resources
	CouchDB stands for "Cluster Of Unreliable Commodity Hardware"	Ehcache	SAP SQL Anywhere formerly called Adaptive Server Anywhere
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