The concept of web services
The ERP prototype showcased in this chapter provides a profound and detailed pedagogy on how to set up web services given a Spring 4.x platform. The conceptual model is to create an ERP wherein all modules are scattered into different islands of networks or distributed around the network as independent real-time applications that share their results given a set of inputs.
All these applications are designed to communicate with each other through a collection of services. The communication can involve either simple data passing or it could involve two or more services coordinating on some activity.
Consumer-producer relationship
All five modules are purely client modules meaning there are no repository (DAO) or service ...
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