Title: Implementing Business Logic with CDS (Core Data Services)
Subject: SAP-Business-Application-Studio in SAP Field
Core Data Services (CDS) play a pivotal role in modern SAP development, enabling developers to define semantically rich data models and implement business logic directly at the database layer. With SAP Business Application Studio (BAS) as the primary development environment for SAP Cloud Platform and ABAP projects, implementing business logic using CDS has become streamlined, efficient, and aligned with SAP’s push toward cloud-native, model-driven development.
This article explores how to implement business logic using CDS within SAP Business Application Studio, highlighting key concepts, capabilities, and best practices.
Core Data Services (CDS) is a semantic layer on top of the database that allows developers to define entities, associations, views, and annotations in a declarative manner using a domain-specific language. CDS enhances the traditional database views by adding business semantics, calculation logic, and UI annotations.
.cds file) under your package or namespace.Example of a simple CDS entity with business logic:
@AbapCatalog.sqlViewName: 'ZC_DEMOORDER'
@AccessControl.authorizationCheck: #CHECK
define view Z_CustomerOrders
as select from snwd_so as SalesOrder
{
key SalesOrder.SalesOrder,
SalesOrder.Customer,
SalesOrder.CurrencyCode,
SalesOrder.NetAmount,
// Business logic: Calculate discount flag based on amount
case
when SalesOrder.NetAmount > 1000 then 'X'
else ''
end as DiscountFlag
}
In this example, the DiscountFlag is a calculated field based on business logic.
case or arithmetic expressions.@OData.publish: true to automatically generate OData services.Implementing business logic with Core Data Services within SAP Business Application Studio empowers SAP developers to create efficient, reusable, and scalable data models. By pushing logic to the database layer, SAP applications achieve better performance and consistency while simplifying front-end development.
Mastering CDS and BAS together is key to building next-generation SAP solutions aligned with SAP’s roadmap toward intelligent, cloud-based enterprise applications.