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Davide Leto

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Christian Curatola

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Raffaele leto

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Il nostro lavoro!

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GRUPPO: Alfieri, Imperato, Sarcone e Nicoletta. 

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GRUPPO: Alfieri, Imperato, Sarcone e Nicoletta. 

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CLIENT-SIDE AND SERVER-SIDE PROGRAMMING

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Write, on each radius, a word closely related to Three Tier architecture. Then join a group of classmates, to compare the results in order to generate another solution (a new sun whose radius contain the words chosen among those commonly agreed).

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Welcome to the "CLIL" course! We are very pleased to announce that the course is now open and we are ready to start this adventure with you all.

You can use this wall for share activities.

We're looking forward to seeing you on the course!

That's it for now. See you in class!

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What does Three-Tier Architecture mean?

A three-tier architecture is a client-server architecture in which the functional process logic, data access, computer data storage and user interface are developed and maintained as independent modules on separate platforms. Three-tier architecture is a software design pattern and a well-established software architecture.

Three-tier architecture allows any one of the three tiers to be upgraded or replaced independently. The user interface is implemented on a desktop PC and uses a standard graphical user interface with different modules running on the application server. The relational database management system on the database server contains the computer data storage logic. The middle tiers are usually multitiered.

The three tiers in a three-tier architecture are:

1. Presentation Tier: Occupies the top level and displays information related to services available on a website. This tier communicates with other tiers by sending results to the browser and other tiers in the network.

2. Application Tier: Also called the middle tier, logic tier, business logic or logic tier, this tier is pulled from the presentation tier. It controls application functionality by performing detailed processing.

3. Data Tier: Houses database servers where information is stored and retrieved. Data in this tier is kept independent of application servers or business logic.

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A “tier” can also be referred to as a “layer”. A wedding cake is said to have tiers while a chocolate cake is said to have layers, but they mean the same thing.