Structure and Table Type

Structure 

   A structure is a data type in ABAP Dictionary composed of several components, including data elements, table types, and database tables. Structures are very similar to database tables, but a structure neither has a primary key nor technical characteristics associated with it. Structures are used when you want to define the same work area in multiple programs .


Table Types 


    A table type is a data type in ABAP Dictionary that describes the structure and functional attributes of an internal table. An internal table is a temporary table that exists only during the runtime of an ABAP program.

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