I'd suggest that if you are seriously interested in receiving help, you should put some more effort (read: a lot more effort) into your request. For one thing it has nothing to do with OpenEdge which makes me wonder why it's in this forum.
What do you want and why do you want it? Are you looking for a career change to DBA? Are you becoming a database developer and need to understand databases so you can write data-access code? Are you just interested in how databases work in general? Which language will you be working in; ABL? SQL? Other?