Informix
Informix
http://www-306.ibm.com/software/data/informix/cisam/
DB2
DB2
http://www-306.ibm.com/software/data/db2/
Oracle
The world's largest enterprise software company, oracle is the only vendor to offer solutions for every tier of your business -- database, middleware, business intelligence, business applications, and collaboration. with oracle, you get information that helps you measure results, improve business processes, and communicate a single truth to your constituents.
http://www.oracle.com/index.html
Progress
Progress supplies business application platform, soa infrastructure and data infrastructure software for software as a software, soa, and algorithmic trading complex event processing.
http://www.progress.com/
SQL Server
Visit this portal for all the latest news and articles to help you evaluate microsoft sql server 2005 for your data management and analysis needs.
http://www.microsoft.com/sql/default.mspx
Solid
Solid makes carrier-grade relational database management software which forms the foundation for building real-time, distributed applications that need data to be always on and as available as the dial-tone.
http://www.solidtech.com/
Sybase
Sybase is the industry leader in business intelligence (bi) software including expert systems for database management, data warehousing and data mining, data integration and application development, as well as mobile solutions. whatever data requirements your business has, sybase can provide you with the applications, servers and tools you need to overcome the challenges that your enterprise has with data management.
http://www.sybase.com/