Difference between PostgreSQL and IBM DB2

1. PostgreSQL :
PostgreSQL is a powerful, open-source Object-relational database system. It provides good performance with low maintenance efforts because of its high stability. PostgreSQL was the first DBMS that implemented multi-version concurrency control (MVCC) feature.

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 PostgreSQL and IBM Db2 :

SR.NO PostgreSQL IBM Db2
1. It is developed by PostgreSQL Global Development Group in 1989. It is developed by IBM in 1983.
2 PostgreSQL server operating systems are FreeBSD, HP-UX, Linux, NetBSD, OpenBSD, OS X, Solaris, Unix and Windows. Db2 server operating systems are AIX, HP-UX, Linux, Solaris, Windows and z/OS.
3 The primary database model for PostgreSQL is Relational DBMS. The primary database model for IBM Db2 is Relational DBMS.
4 It is written in C language. It is written in C, C++, Assembly language, Java languages.
5 Famous companies like National Audubon Society, Inc., FreshRealm, LLC, TIME Systems etc uses PostgreSQL. Famous companies like JPMorgan Chase, Bank of America, Scotiabank, Citi, etc use Db2.
6 It uses ADO.NET, JDBC, native C library, ODBC, streaming API for large objects as APIs. It uses ADO.NET, JDBC, JSON style queries info, ODBC, XQuery as APIs .
7 It is a open source software framework. It is a commercial databases.
8 It supports Secondary indexes. It supports the secondary indexes without any restrictions.
9 It supports C, .Net, C++, Java, JavaScript, PHP, Python, Ruby. It supports C, C++, Cobol, Java, Perl, PL/1, Python, R, Ruby.
10 It provides access rights for users and roles. It provide fine grained access rights according to SQL-standard.

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