How to read dataset from cache?

[Newkid]

Hi there!

I'm a newbie in this area and have assigned, appears to be, tough task.Please help me out.

I have to update 3 different database server(Sybase / MYSQL / MS SQL) using a client webservice.Client has one tool that can push the new records(Products) time to time and webservice(at client end) will keep the records in the cache. Please let me know how to read the dataset from cache? and how to update the map the fields?. Please advice.

FYI:


Public Function WinUploadFile(ByVal UserID As String, ByVal Password As
String, ByVal DS As DataSet, ByVal Rebuild As Boolean) As Boolean
Try
If CheckUserIDandPassword(UserID, Password) Then
Dim cs As New ClientSpecific(UserID, Password)
cs.SubmitInventoryUploadDS(DS, Rebuild)
Else 'bad credentials
Return False
End If
End Try
End Function

Let me know If I missed anything..

Would highly appreciate prompt response!

With Thanks!