>>>I am using scan command everytime the form load up, so it calculate every single record. (I want to make sure whatever client enter is being calculate)
>>>scan
>>> **calculation
>>>endscan
>>>
>>>I want to know is there any other faster command can get the job done faster. Now, everytime client load the form it take 1 minute or so to open up and that's with 16 meg of ram. I can't imagine if the client have less than 16meg of ram, it probably take a while to load.
>>
>>If you don't care about deleted records, then use RECCOUNT(), otherwise use COUNT ... FOR NOT DELETED() and create index tag for NOT DELETED().
>
>Sorry Edward, I think you misunderstood my question. I am trying to calculate whatever the user have input in a textbox, I could do the calculation in the keypress event, but then the user have to press tab or whatever to execution the calculation. So that why I had use scan command during load up to calculate every record in the table and store the new value in a specific field.

But why do you need to calculate for every record. It's much simpler either make recalculations exactly when record gets updated (trigger?) or even not to use 'recalculated field' but expression as controlsource for some textbox (grid column), eh?