1. Primary Index Created automatically when you create a table in SE11. Based on the primary key fields of the table. Always unique. Cannot be deleted. Used whenever you do a SELECT ... WHERE on the primary key. Example:For table MARA, the primary index is ...
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Automatically from a Dictionary Structure/Table The easiest way — ALV can build the field catalog from the DDIC (Data Dictionary). You just pass the internal table reference. ALV uses the metadata (field labels, data type, length) from DDIC. Example: CALL ...
A friend class can access the protected and private components of another class. This is useful when you want to allow controlled access to internal details of a class without making them public. CLASS main_class DEFINITION. PUBLIC SECTION. METHODS: display. PRIVATE ...
A class can implement multiple interfaces at once, which allows you to combine functionality from many sources. Example: ” First interface INTERFACE if_flyable. METHODS: fly. ENDINTERFACE. ” Second interface INTERFACE if_swimmable. METHODS: swim. ENDINTERFACE. ” A class implementing multiple interfaces CLASS cl_duck DEFINITION. PUBLIC ...
Abstract Class Defined with CLASS ... DEFINITION ABSTRACT. Can have: Attributes (data) Concrete methods (implemented) Abstract methods (declared but not implemented — must be redefined in subclass) Cannot be instantiated directly — only subclasses can be created. Supports inheritance (a subclass inherits implementation + attributes). Can implement interfaces ...
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 ...
Segment Definition: The smallest building block of an IDoc. Represents a logical grouping of fields (like a table structure). Each segment corresponds to a set of related data — for example: E1KNA1M → Customer general data (Name, Address, etc.) E1KNB1M → Company code–specific customer data. Segments ...
LSMW (Legacy System Migration Workbench) is a standard SAP tool used to migrate data from non-SAP (legacy) systems into SAP. It is mainly used during data migration projects such as SAP implementation, system upgrades, or when large volumes of master ...
A Persistence Class is a special ABAP Objects class generated by the Persistence Service that maps database tables to ABAP objects, allowing you to read, modify, and save table data in an object-oriented way instead of writing SQL manually; it ...
BDC (Batch Data Communication) is a technique in SAP used to transfer or upload large volumes of data into the system by automating transactions. It simulates manual data entry (like recording keystrokes). Commonly used during data migration or mass updates. Works by preparing ...