i have an Index (ID)...how can i delete the phone book contact associated to this Index in Android?

Question

I Have used following code to delete the contact using index... SqliteWrapper.delete(mContext, mContext.getContentResolver(), RawContacts.CONTENT_URI, RawContacts._ID + "=" + Index, null);

is it correct?

do i need to delete the entry from Rawcontacts table or Contacts table...?