hii just want to configure my adapter such that i can update information to Access db. but i got this error from the OleDbdataAdapter>> Could not determine which columns uniquely identify the rows for....i already spent the past few hours finding online solutions but to no avail, mainly because the forum dicussions stopped halfway and the language is not the same as mine.just to check with you:since i can already get the selected data out from db using parameterized query, does that mean that if i can update successfully, my updates will return to the EXACT table fields it came from?please, please help me to get this part going....it's urgent!i really appreciate any help!thanks in advance!