What is Oracle Database ?

Oracle is the leading RDBMS (Relational Data Base Management System) available in the modern market. Oracle Software is produced and marketed by Oracle Corporation (www.oracle.com). Oracle Corporation has many other products based on Applications, Middleware, Server and Storage Systems etc. In 2011 Oracle has acquired Java and MySQL where MySQL is an open source database.

Website – www.oracle.com/database/

Written in C, C++

License – Proprietary

Initial Release Year – 1979

Stable Release – Oracle 19c, 2019

Major Milestones

Name	                 Version	 Year

Oracle v2	         2.3	         1979
Oracle v3	         3.1.3	         1983
Oracle v4	         4.1.4.0	 1984
Oracle v5	         5.0.22	         1985
Oracle v6	         6.0.17	         1988
Oracle 6.2	         6.2.0	         1989
Oracle 7	         7.0.12	         1992
Oracle 7.1	         7.1.0	         1994
Oracle 7.2	         7.2.0	         1995

Oracle 7.3	         7.3.0	         1996

Oracle 8	         8.0.3	         1997
Oracle 8i	         8.1.5.0	 1998
Oracle 9i                9.0.1.0	 2001
Oracle 9i Release 2	 9.2.0.1	 2002
Oracle 10g Release 1	 10.1.0.2	 2003
Oracle 10g Release 2	 10.2.0.1	 2005
Oracle 11g Release 1	 11.1.0.6	 2007
Oracle 11g Release 2	 11.2.0.1	 2009

Oracle 12c Release 1	 12.1.0.1	 2013

Oracle 12c Release 2	 12.2.0.1	 2016

Oracle 18c	         18.1.0	         2018
Oracle 19c	         19.1.0	         2019
Oracle 21c	         21.1.0	         2020 

Database Market Share and Position

Without argument Oracle is the best database available in the market as of today and holds  majority of the database market share. Microsoft SQL Server and IBM DB2 are the nearest rival for Oracle nowadays.

As per 2016 Gartner Study claimed to show Oracle holding #1 RDBMS market share worldwide based on the revenue share ahead of its four closest competitors – Microsoft,IBM, SAP and Teradata