CAL (Client Access Licence)
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I am a bit confused about the whole CAL thing and was wondering if anyone could enlighten me. The current system architecture is: Windows Server 2003 server with SQL Server 2005 Express installed on it. A main service runs on the server which reads and writes data to the database. It also recieves and distributes information to some other services running on the server. External devices, e.g. GUI's and output displays, connect to these services to send and recieve information. My query is obviously "How many CAL's do I need?". Having looded around abit, I don't believe we need any for SQL Server 2005 Express (only the Standard and Enterprise editions), but do we require a server CAL for each external device that exchanges data between our services running on the server? Thanks for any help.