Db forbindelse

Har følgende database forbindelse forbindelse (system jeg har overtaget fra anden udvikler).

Set rsExperts = Server.CreateObject("ADODB.Recordset")
rsExperts.Open "Experts", objConn, adOpenForwardOnly, adLockOptimistic, adCmdTable

Dim strName, strValue                                  ' create session variables
  For each strField in rsExperts.Fields
  strName = strField.Name
    if strName <> "ExpertID" and strName <> "FileNameExpert1" and strName <> "FileNameExpert2" _
      and strName <> "FileExpert1" and strName <> "FileExpert2" then
    if rsExperts(strName).type=202 then
      if rsExperts(strName).DefinedSize<Len(Uploader.Form(strName)) then _
          Session("messages") = " The number of characters entered in the field " & strName & _
        " excides the allowed maximum of " & rsExperts(strName).DefinedSize & ". Please, type in fewer characters! "
    end if
    Session(strName) = Uploader.Form(strName)
    end if
  Next

Har ikke selv arbejdet med db forbindelse på den måde (bruger selv set RS = MyConn.Execute("SELE..."))

Er det korrekt forstået at:

rsExperts.Open "Experts", objConn, adOpenForwardOnly, adLockOptimistic, adCmdTable - åbner tabellen experts? Hvad hvis man kun vil hente spcifikke entititer (altså en sql sætning)

Hvad sker der lige præcis her:
For each strField in rsExperts.Fields
  strName = strField.Name
    if strName <> "ExpertID" and strName <> "FileNameExpert1" and strName <> "FileNameExpert2" _
      and strName <> "FileExpert1" and strName <> "FileExpert2" then
    if rsExperts(strName).type=202 then

takker på forhånd for hjælpen
rebel_penguin