I have done some preliminary research into open source database systems and am in need of some community advice.

I am searching for a highly efficient multi-connection DBS. By multi-connection, I am referring to the potential to have multiple-hundreds of concurrent requests to the database, some of which may make calls to same table tuples.

Any assistance, advice, or information is welcome.

Thank you.

Really, any of the top-tier database servers should be able to handle this. SQL Server, Oracle, maybe even MySQL.

Here are some interesting results from an article that Tweakes.Net did. They were loading various multicore servers with many concurrent connections. Now, the focus of the article is the server comparison, but, they also found some interesting results in comparing the database servers (MySQL 4 & 5, and PostgreSQL 8.)

http://tweakers.net/reviews/657

Interesting indeed...