Feature OData v2 OData v4 Release Year 2010 2014 (OASIS Standard) Standardization Microsoft proprietary Official OASIS and ISO standard Data Format Atom (XML) and JSON (limited) Optimized JSON (no Atom), cleaner structure Metadata Format CSDL in XML CSDL in XML and JSON Navigation $expand (basic support) Improved $expand with deeper levels Actions/Functions Limited Fully supported, standardized Enum Support Not available Supported Containment Not supported Supported (better ...
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An IDoc (Intermediate Document) is SAP’s standard format for electronic data interchange (EDI) between SAP systems or between SAP and external systems. It acts as a structured container for data, ensuring that the information exchanged follows a predefined format, making ...
Association An association is a declarative relationship between CDS entities (like foreign keys), defined using the association keyword. Key Characteristics: Lazy/Evaluated-on-demand: Data from the association is not fetched unless it is explicitly accessed using a path expression (like to_customer.name). Navigation-style ...
1. Single Inheritance (Supported in ABAP) Definition: One subclass inherits from one superclass. Use: Most common form of inheritance. CLASS parent_class DEFINITION. PUBLIC SECTION. METHODS: display.ENDCLASS.CLASS parent_class IMPLEMENTATION. METHOD display. WRITE: 'Parent class method'. ENDMETHOD.ENDCLASS.CLASS child_class DEFINITION INHERITING FROM parent_class.ENDCLASS.CLASS child_class IMPLEMENTATION.ENDCLASS.
Reports are a major part of application development used to display data to users. There are three main types of reports: Classical Reports Simplest and most basic report type. Output is in line-by-line format using WRITE statements. Limited formatting, but supports interactive ...
Classical Reports in ABAP use a sequence of predefined events during program execution. These events let you structure your code based on data fetching, formatting, and output rendering. Event Description LOAD-OF-PROGRAM Triggered once when the program is loaded into memory (before anything else) INITIALIZATION Called before ...
EML (Entity Manipulation Language) is a standardized way to interact with RAP business objects (BOs).Instead of directly updating database tables, you manipulate entities of a business object using EML statements. It’s similar to SQL but tailored for RAP-managed business objects ...