1. CouchDB :
2. IBM Db2 :
IBM Db2 is a family of data management products, including database servers, developed by IBM. It is a Relational Database Management System (RDBMS) which supports object-oriented features and non relational structure with XML. Db2 is designed to store, analyze and retrieve the data efficiently. It was initially released in 1983 and is written in C, C++, Java and Assembly language.
Difference between CouchDB and IBM Db2 :
|1||It is developed by Apache Software Foundation in 2005.||It is developed by IBM in 1983.|
|2||CouchDB server operating systems are Android, BSD, Linux, OS X, Solaris and Windows.||Db2 server operating systems are AIX, HP-UX, Linux, Solaris, Windows and z/OS.|
|3||The primary database model for CouchDB is Document Store.||The primary database model for IBM Db2 is Relational DBMS.|
|4||It is written in Erlang language.||It is written in C, C++, Assembly language, Java languages.|
|5||It is free of data schema.||It has fixed data schema.|
|6||It do not provides ACID transactions.||It provides ACID transactions.|
|7||It does not have the concept of Foreign keys.||It has the concept of Referential Integrity and Foreign keys.|
|8||It does not supports Secondary indexes.||It supports the secondary indexes without any restrictions.|
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