Can't Add Record To Table

[Warren Kuhl]

Ivan,

Thanks...this really clears things up.  You have been most helpful.

All the best!
Warren

On Wed, Sep 22, 2010 at 7:01 AM, Ivan Smahin
<ivan_smahin at paradigmasoft.com>wrote:

> Hello Warren,
>
> Wednesday, September 22, 2010, 2:36:43 PM, you wrote:
>
> > I added the db_close and this worked.  The records now show up.  This
> brings up a question....
> >
> > Should I ...
> >
> > 1) do a db_open when I open my application and a db_close when I end my
> application?
> >
> > -or-
> >
> > 2) do a db_open when I update my database and a db_close when I finish
> updating?
> >
> >
>
> You  should open db in order to use it. Without it you will get
> errors like "Db is not opened"
>
> You should close db in order to close db files.
> BTW,  closing db cause db-files flushes. Without it you may loose your
> changes (unpredictable part of your changes).
>
> db_flush  is  flushing  all  changes  to the disk. After this all your
> changes are fixed on disk.
>
> > The reason I am asking the above question is if you have to do a
> > db_close for the updates to completed.  I am worried that if I do a
> > db_close when the application completes, I could lose data if the
> application closes unexpectedly.
> >
> > Same with the db_flush...when should this be done?
> >
>
> db_close  just  causes  db_flush.  Normally you should not call db_flush
> after each update but you may do it on some basis in order to get some
> protection from crashes.
> On  the other hand crash is the thing which should be cured. You would
> not live with it anyway.
>
>
> Also  pay attention to Valentina errors and how you may handle them (see
> examples and wiki)
>
>
> --
> Best regards,
> Ivan Smahin
> Senior Software Engineer
> Paradigma Software, Inc
> Valentina - The Ultra-Fast Database
> http://www.valentina-db.com
>
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