CDS - define view vs define root view

[Former Member]

Hello together,

The nice thing about the new SAPUI5 world is that you can/must learn something new every day.

We bought the book "Core Data Service for ABAP" and in the code examples for the book we use the command 'define root view'. I have 2 questions about the CDS command 'define root view'.

1) From which SAP release is this command possible?

2) Can someone explain in simple words what the difference is between 'define view' and 'define root view'.

As I can understand, 'define root view' is a BDL command and 'define view' is a DDL command. DDL is still known from SQL but BDL is new to me.

Here are the links to the SAP help:

define root view

define view

Best regards
Uwe

[Former Member · Accepted solution]

Hello together,

Thanks for your answers.

I have written to the authors of the book mentioned above.

The functionality is introduced with the "ABAP Restful Programming Model" and is available as of SAP NW Version 7.54 (1909).

The following two links give a nice overview, when which CDS functionality was added:

ABAP Restful Programing language

Keyword Documentation - Release changes

Best Regards
Uwe