"Whether companies sell or provide their databases with fully
available source code, through a new open source project, or with
their very own open source license, there is definitely open source
fever in the database business these days. Older, established
database makers such as IBM, Sybase, and CA are releasing the code
for what were previously proprietary products. But these players
are coming late to the party thrown by MySQL, PostgreSQL, BerkelyDB
maker Sleepycat, and Firebird. How much open source beer are these
newcomers bringing to the database bash, or are they simply coming
in and asking where the cups are?
"The companies that create and sell databases differ on how much
of the trend toward opening proprietary products under open source
licenses is business and technical versus how much is marketing lip
service to the open source bandwagon, which is sometimes viewed as
a new opportunity for old products..."