Re: Database Persistance

Tech-Archive recommends: Fix windows errors by optimizing your registry

Check out Notification Services. It can do what you want. There are a number of issues involved here including adverse performance, but it can notify you if specific tables or their contents are changed.

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<steve.a.bennett@xxxxxxxxx> wrote in message news:1185206159.477485.38030@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi

I'm not sure whether I've given this post the correct title, but I'm a
bit unsure of where to put it.

I have a database that holds information about several of our users.
This database is stored on a central server, with an application that
periodically performs some processing, which may or may not update the
database. It is possible that some times this data will update several
times a minute.

Here's my problem - I would like to create an application, in a remote
location to the main database server that displays the database
contents. This applications would need to update its view of the
database as soon as the database changes in order to ensure that only
the most up to date information is being displayed.

I've previously done this by periodically re-reading the database and
updating the fields that have changed on screen, however as I add more
terminals, this may cause a problem. So ideally I would like a
callback or trigger to be called when the database updates that
informs the correct client, so that it can update it's screen
accordingly.

Is this possible, or am I barking up the wrong tree? Is there a better
way of doing it? I'd be very grateful if you could give me your
thoughts.

I am developing the main client application in C#, and the database is
currently MySQL. It would be possible to change the database if this
made things easier, however it would have to be a free alternative!

Many thanks

Steve


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