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Information Systems Transformation by Philip Newcomb, William M. Ulrich

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Illustrations of Major System Processes and Components

Log-in and Business Logic Thread Instantiation Process

Initially with all components of the system up and running, the main application “broker” in tier C waits for a user to begin a new session. The user begins a new session by opening a URL to the Web server (tier E) and logging on successfully. After successful authentication, the Web server tells the application broker that a new session has begun.

The application broker instantiates a new business logic thread based on the log-on authentication level. After the business thread is started, the application broker continues to scan for other new session requests. There is a reaper that cleans up the business logic thread when at the ...

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