Applet problem of databse connectivity on different databse server

Hello Friends
I am working on chat application using applet.
But simple applet throw exception for different database server than application server.
So how can solve this problem ?
Is Signed Applet a solution ?
If yes how to develop signed applet ?

Basically it's not a good idea for applets to try and talk to databases etc. directly. Your applet talks to the sever via http and the server takes care of any database activities etc..
For a start, your database shouldn't be visible through your firewall, and it's likely, even if it was, the user's site's firewall would block it anyway.
If it could get the connection your database would be wide open to hacking.
In principal you could enable a connection by signing the applet, or by modifying the client policy file but it's not the right way to go.
And if this is just a local application on a controlled set of machines then what's the point in using an applet, when a GUI program would be more flexible and powerful?

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Lynx wrote:
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Is there any problem with my DNS ? 'cos I don't know how to set up my DNS.
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Thank's

You need to read up on what applets are capable of. Applets generally cannot open connections to things like databases due to sandboxing. There are a couple of ways to get around this. The applet can connect to a servlet on the same machine from which it came and have the servlet do the database accesses. Alternately, you can create a signed applet which allows you to get around some of these sandboxing issues.If tried to make localhost on my computer ( by setting my IIS configuration setting, and using Configure SQL XML Support in IIS I've created a new http://localhost/skripsi to my SQL database.
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Is there any way to use applet to connect my database withaout using servlet, and can u explain siggned applet to mey ??
Sorry, I don't really know java very well.
driver type 4 ??

Applet problem of databse connectivity on different databse server

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