a shot at the design

Did not give design much of a thought and started coding last weekTypical code monkey

Now when I have some part implemented I thought I'd review what I was doing.

Data.java implementons the interface provided by sun.
Data.java is a singleton and delegates to a helper .
This helper will talk to a factory and ask for the database instance.
so soemthing like getDB("flatfile")
now it will get he correct type now flat file later mbe an rdbms.
I have a metadata parser which is static in my Data.java that will parse everything and give me
Thats all I have so far..
More during teh weekend

Tell me what you guys think
Regards
subu

I think it would be a good idea for you to browse this forum for a while. Several people have in the past proposed designs (in much more detail) and have received very good feedback.