What is root entity in SAP (BC-ESI-RAP - RESTful ABAP Programming Model)?

SAP Term: root entity

• Component: BC-ESI-RAP

• Component Name: RESTful ABAP Programming Model

• Description: The top node in a business object's structure. In ABAP CDS, a root entity is defined using the keyword ROOT.

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• Key Concepts: 
  Root entity is a term used in the BC-ESI-RAP RESTful ABAP Programming Model. It is the top-level entity in a data model and is used to define the structure of the data model. It is the starting point for all operations and contains all the other entities in the data model. 
  
  How to use it: 
  Root entities are used to define the structure of a data model. They are used to define the relationships between entities, as well as the properties of each entity. They are also used to define the operations that can be performed on each entity. 
  
  Tips & Tricks: 
  When creating a root entity, it is important to ensure that all entities in the data model are properly linked together. This will ensure that all operations can be performed on each entity. Additionally, it is important to ensure that all properties of each entity are properly defined. 
  
  Related Information: 
  For more information on root entities and how to use them, please refer to SAP's documentation on BC-ESI-RAP RESTful ABAP Programming Model. Additionally, there are many tutorials available online that provide step-by-step instructions on how to create and use root entities.