Re: Getting management to move from green screen

On Mar 24, 3:44=A0pm, GVP <prya...@[EMAIL PROTECTED]
> wrote:
> :)
>
> I have told about field. I'm not novice in programming. :)
>
> Validation is very complex problem. Problem is INPUT FOCUS. Green
> screen have fixed focus.
> GUI float.Only two way of validation are present.
> 1 By form (validation logic at client) and delayed validation at
> server
> 2 By field (validation at server). This is very complex and slow in
> GUI. Program should move focus after each validation.

Just a few minor points. In my experience, field by field validation
doesn't always need to take place at the server (eg: numeric ranges,
dates, select boxes), isn't "complex" and isn't necessarily "slow" (I
would suggest "faster than a user can enter" is fast enough!)

Moving focus after a successful validation is conceptually no
different than in a green screen, with focus staying on the
"current" (last entered) field in the event that entered data fails
validation.

I hope that you would agree that for people moving from a green screen
environment to GUI that field by field validation has a more "natural"
feel to it, than "form validation", which whilst "familiar" to someone
used to 3270, is a totally foreign and "complex" concept for most
MVDBMS developers

>
> In any case (GUI), program don't know when it should validate field -
> when field lost focus or when field receives it.
>
> As result, most of GUI applications uses delayed validation.
>

We obviously move in different circles, as most GUI applications that
I am aware of work using a field by field validation paradigm, rather
than "form submit" (delayed validation as you call it), and they
certainly DO know when validation is required!!