Question: If you were to use a Writable CD would it be possible to
save the Data?
Joe Wilkins
On Feb 6, 2008, at 10:02 PM, Ruslan Zasukhin wrote:
On 6/2/08 7:32 PM, "Derek Bump" <[EMAIL PROTECTED]> wrote:
Hi All,
In general case Databases (w.g. SqlLite or Valentina) will not allow
you do
this on CD. You will get exception/error on the first attempt to do
INSERT/UPDATE/DELETE ... CREATE/ALTER TABLE
In the same time, you can with Valentina (and it seems with SqlLite
also)
create RAM-only database and then use it. Difference only that your
data
will not be saved to CD when your app quits.
On the other hand, RAM based db can be about 10 times faster than
disk-based
one. :-)
Tiemo,
It depends on how the Database is handled. You will have to either
test
it out, or read the documentation for the database type you are
working
with.
The other solutions presented are definitely the best way to go.
Create
your "default" database and burn it to CD. When the program on the
CD
is launched, copy it to the user's hard drive and start using that
copy
to work with.
Like I said though, it depends entire upon the type of database you
are
working with. I don't use SQL as I find it to be rather bulky. I
use
Flat Files, and I write all of my own database handlers, so my
coding is
not dependent on SQL or some other type of database and it's
limitations.
The advantage and disadvantage of programming is that sometimes you
have
to re-invent the wheel. That's just how it goes.
Derek Bump
Dreamscape Software
http://www.dreamscapesoftware.com
---------------
Tiemo Hollmann TB wrote:
Hi Derek,
When you open a file or program, it is placed into memory. From
there,
you can fill variables, fields, properties, etc. You just can't
save
those changes back to the file on the CD.
yes, but isn't this the same with a database, as long, as I don't
want to
save the changes? Or is a database an exception with this handling
and is
only the current sql set in memory - probably!?
--
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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Joe Lewis Wilkins
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