Layers of distributed system architecture, Computer Engineering

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Q. Layers of Distributed System architecture?

Layers of Distributed System architecture are:

Presentation Layer is actual user interface. This layer receives input and presents output.
Presentation Logic layer comprises processing essential to establish user interface. Example: Formatting output data, editing input data.
Application Logic Layer comprises all the logic and processing needed to support actual business application and rules

Example: Calculations.

Data Manipulation Layer comprises all the command and logic essential to store and retrieve data to and from database.
Data Layer is actual stored data in database.

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