HELP to write good Getting Started

Jochen Kötter jochen-koetter at gmx.de
Fri Jun 22 03:38:54 CDT 2007


Am 22.06.2007 um 10:11 schrieb Ruslan Zasukhin:

> On 22/6/07 11:03 AM, "Jochen Kötter" <jochen-koetter at gmx.de> wrote:
>
> Hi Jochen,
>
>> Hi Ruslan,
>>
>> I changed from 4D, long years ago I worked with MSAccess. Both worked
>> with GUI creating Schema. One of my hardest Question at the beginning
>> was:
>>
>> - What is the finest solution to change the DBSchema without losing
>> data because of the creating of a new instance of my db-Subclass?
>>
>> (First I created a new Instanz and replaced the Datafile with the
>> older one!!)
>
> Okay, so this can be made as article:
>
>     "Schema Migration"

What do you think about ' Schema Updating' ?


>
>         a) SQL way
>         b) API way
>         c) Class way
>
> Right?

Yeah!

>
> Btw, have you already get working your Class way migration ?

Oh yes, I wrote a class named VDbSys for opening the db.

  It works fine  :-)

Greetings
Jochen


>
>
>
>
> -- 
> Best regards,
>
> Ruslan Zasukhin
> VP Engineering and New Technology
> Paradigma Software, Inc
>
> Valentina - Joining Worlds of Information
> http://www.paradigmasoft.com
>
> [I feel the need: the need for speed]
>
>
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