In 2004, Oracle's sales grew at a rate of 14.5% to $6.2 billion, giving it 41.3% and the top share of the relational-database market (InformationWeek – March 2005), with market share estimated at up to 44.6% in 2005 by some sources. Oracle Corporation's main competitors in the database arena remain IBM Db2 and Microsoft SQL Server, and to a lesser extent Sybase and Teradata, with free databases such as PostgreSQL and MySQL also having a significantDB-Engines Ranking - popularity ranking of database management systems. Db-engines. Retrieved July 14, 2013. share of the market. EnterpriseDB, based on PostgreSQL, has made inroads by proclaiming that its product delivers Oracle compatibility features at a much lower price-point.
In 2004 Oracle's sales grew at a rate of 145% to $62 billion giving it 413% and the top share of the relational-database market (InformationWeek – March 2005) with market share estimated at up to 446% in 2005 by some sources Oracle Corporation's main competitors in the database arena remain IBM Db2 and Microsoft SQL Server and to a lesser extent Sybase and Teradata with free databases such as PostgreSQL and MySQL also having a significantDB-Engines Ranking - popularity ranking of database management systems Db-engines Retrieved July 14 2013 share of the market EnterpriseDB based on PostgreSQL has made inroads by proclaiming that its product delivers Oracle compatibility features at a much lower price-point