I am new to Linux and I would appreciate any help supplied here.

Here is my Issue:
I have designed an application and I am looking for a database that will support said design. I have identified that MS SQL 2005 supports it with the functionality called "Extended Properties". This function allows custom properties to be added/updated/deleted at multiple levels within the database (Database/Schema/File/Column). But, this requires the use of MS products (not something I favor). I would like to find a LINUX database that supplies the same functionality. I have looked but to no avail. Any help on the available databases will be appreciated.

Once completed, I plan to make the application Open Sourced.

I would rather develop in LINUX, the operating system of the future.
Thanks in advance.

for OSS or free your options are pretty much MySQL, Postgres, IBM DB2 Express, or SAP DB

No clue if any of these will fit your requirements.

The only other major database that runs on Linux I can think of is Oracle..

A list of Databases for Linux... who knew there were so many ?

I have checked all of the above except the SAP DB. I will do that now.
Thx again.