Hi Tariq,
I think Basis consultants are the best to reply as many queries are basis related. So if you just check once with any Basis consultant that may appear very sound ful in understanding the pre requisites.
I think DB connect will suit the requirement. Please check to configure DB connect .
i am also giving you a reference doc
http://www.oracle.com/technetwork/middleware/data-integrator/overview/odigs-sapabapbw-168071.pdf
thank you!