Describe the three-tier application model.
What will be an ideal response?
The three-tier model is growing in popularity because it attempts to ease application maintenance and enables the support of larger numbers of users. In this scenario, the user interface is typically presented via a Web browser and is often referred to as a thin client. Application code is not loaded onto the client machine; all the application code now resides on an application server, which is also referred to as the middle tier.
Three layers now exist in this model: the user interface, the application server, and the database server. The Oracle application server allows the deployment of Oracle Forms applications via the Web. The application server contains the user interface and processing logic, which together, respond to user actions and, in turn, send appropriate code to the database server for processing.
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