Three-tier, server-side dynamic behavior

Our class roster application has three tiers. The Web client is the first tier, the Web server the second, and the database server the third. In this case, the Web and database servers are both running on the same computer, but they are separate programs.

The script that displays the roster, reads it from the database and formats it as an HTML page the users browser can display.

To add a new student record, the user completes a form which is sent to the Web server. The Web server then adds a record to the database using the values in the form.

The script that deletes a student record also calls the database server, which deletes it.

The application documentation explains how it works.

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