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PHP Application Development with NetBeans Beginner's Guide by M A Hossain Tonu

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Understanding the application architecture

The architecture needs to be built up in layers in data storage, data access, application services, and the application. This is depicted in the following screenshot:

Understanding the application architecture

Each layer can be designated as a group of analogous logical tasks, as the data storage layer acts as a data source, such as a relational database, a filesystem, or any other data source. The data access layer communicates with the data source to get or store data from the storage layer, and provides a nice abstraction in the data source to be delivered to the service layer. The service layer is a medium of data persistence with the application ...

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