ABAP Keyword Documentation → ABAP - Reference → Processing Internal Data → Character String and Byte String Processing → Character and Byte String Processing - Overview
Character and Byte Strings
Character-like data objects contain character strings. A character-like data object either has a character-like data type
(c, d, n, t, or string) or it is a
flat structure with exclusively character-like components.
Byte-like data objects contain byte strings. A byte-like data object always has the byte-like data type x or xstring.
Outside of Unicode programs, it is possible to treat any kind of flat structure or byte-like data object as a character string.