Difference between Derby and CouchDB

1. Derby :
Derby is a full-featured, open-source relational database management system (RDBMS) implemented in Java and as the name suggests it is developed by Apache Software Foundations. It is based on Java, JDBC and SQL standards. Derby is easy to install, deploy, and use. It is either embedded into a Java application or used as a database server.

2. CouchDB :
CouchDB is an open-source document-oriented NoSQL database that uses multiple formats and protocols to store, transfer, and process its data, it uses JSON to store data, JavaScript as its query language using MapReduce, and HTTP for an API. It was developed by Apache Software Foundation and initially released in 2005. It is written in Erlang.

Difference between Derby and CouchDB :

SR.No.	Derby	Couchdb
1	It is developed by Apache Software Foundation in 1997.	It is developed by Apache Software Foundation in 2005.
2	It is written in Java language.	It is written in Erlang language.
3	The primary database model for Derby is Relational DBMS.	The primary database model for CouchDB is Document Store.
4	Server operating systems for Derby are Windows, macOs, Linux, Unix, BSD and z/OS.	CouchDB server operating systems are Android, BSD, Linux, OS X, Solaris and Windows.
5	APIs and other access methods used by Derby is JDBC.	APIs and other access methods used by CouchDB is RESTful HTTP/JSON API.
6	It support only Java programming language.	It supports C, C#, ColdFusion, Erlang, Java, JavaScript, PHP, PL/SQL, Python, Ruby, etc.
7	It support Master-Slave Replication methods.	It support Master-master replication, Master-slave replication.
8	In Derby, partitioning cannot be done.	In CouchDB, partitioning can be done by Sharding.
9	It is a open source software framework.	It is a open source software framework.
10	It support fine grained access rights according to SQL-standard.	It also support access right for users.

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