I will give you the example for retrieving the OrdrNo from
database using msAcess:

systemutil.Run "C:\Program Files\Mercury
Interactive\QuickTest
Professional\samples\flight\app\flight4a.exe"
Dialog("text:=Login").Activate
Dialog("text:=Login").WinEdit("attached text:=Agent
Name:").set "rajaputra"
Dialog("text:=Login").WinEdit("attached
text:=Password:").set "mercury"
Dialog("text:=Login").WinButton("text:=OK").click
Window("text:=Flight Reservation").Activate
For i=1 to 5
Window("text:=Flight Reservation").WinButton("window
id:=5").click
Dialog("text:=Open Order").Activate
Dialog("text:=Open Order").WinCheckBox("text:=&Order
No.").set "ON"

''''Till this you know. this is DP for getting the details
'''''of the order no. Now to get the order no from
'''''datatabase using MSACSESS follow the navigations

'Goto insert-output value-Database Out put value
'Select first radio button, and select check box maximum no
'of rows (say 5)-Next
'Select  MSAcess Database,select C:\Program Files-Mercury
'Interactive-QuickTest
'Professional-samples-flight-app-flight32 database
'select Orders-Order No-Next-next-next-Finish
'click on the double click on order no one by one then Ok
'You will get ''DbTable("DbTable").Output
'CheckPoint("DbTable")'''''  Line

a=datatable(i,1)
	'msgbox a
Dialog("text:=Open Order").WinEdit("window id:=1016").set a
Dialog("text:=Open Order").WinButton("text:=OK").click
Pname=Window("text:=Flight Reservation").WinEdit("attached
text:=Name:","window id:=1014").GetVisibleText
msgbox "The Passenger Name of Order No "&a&"  is  "& Pname
Next


''''Run the program''''