Training Backend Service Model - xAPPnow Low Code Platform

In this training of the xAPPnow Low Code Platform we want to provide an overview of the backend service model. In general, the modeling features are identical as for client-side service models.

In contrary to the client-side service model a server-side service model cannot be used standalone. It can only be used in conjunction with a BPMN process model type. In such a process model the server-side service model is linked to a BPMN script task.

The major purposes of a server-side service model are:

complex business logic to structure the implementation for better visuell understanding
integration of external systems
WORD and PDF related processing

Comparison of client-side and server-side service model elements

Model Element	Client	Server
UI Page	YES	-/-
UI Dialog	YES	-/-
Script	YES	YES
Submodel	YES	YES
Call Element	YES	-/-
REST Connector	YES	YES
DB Connector	YES	YES
DB Transaction	YES	YES
Process Connector	YES	YES
CMIS Connector	YES	YES
File Connector	YES	YES
EXCEL Connector	-/-	YES
PDF Connector	-/-	YES
Email Connector	YES	YES
ESB Connector	YES	YES
Push Notification	YES	YES

All other elements are identical in both model types.

Training Chapters

The training consists of the following chapters, where chapters marked in bold are containing exercises.

Create your personal Training Project

Before starting the training you should create your personal training project to view the models of the training and to execute the exercises of the training.

You can create the project directly after login into Modeling Studio using the "User Projects" dialog or you can use the submenu "Create Project..." from the "Project" menu of Modeling Studio.

We recommend to use a project name like "Training Service Backend - Username" to easily manage your projects in the runtime environment (User Portal).
Select "Tutorial" to load projects from domain "tutorial"
Select "Tutorial - Service Model Backend" as project template to create the training project.