As per the requirement, we will need four tables. One each for Header & Item data for contacts. Additionally, I created a master table for the contact categories and phone number tags, this is required to supply value help for UI.
We will define the Interface Views for the Phone Book App using CDS (Core Data Services) in ADT (ABAP Development Tools)
Service scope is confirmed using Service Definition.
We can provide the list of entity sets that need exposure.
To specify the business object’s behavior, the behavior definition as the corresponding development object is used. A business object behavior definition (behavior definition for short) is an ABAP Repository object that describes the behavior of a business object in the context of the ABAP RESTful application programming model. A behavior definition is defined using the Behavior Definition Language (BDL).
Messages Handling in Purchase Order and Purchase Requisition Enhancements
Displays the complete details of athe SAP Workflow Decision Task (Workitem). The details include Agents, Comments, History, Attachments, Description, Task Info.