Under certain circumstances, special characters read from the database cannot be correctly represented in the ADABAS tools because these characters are not contained in the national character set used.
In this case, the component CONTROL can be used to define a language-specific table for the mapping of codes, MAPCHAR SET, in the ADABAS database in order to be able to represent at least those national special characters that are read from the ADABAS database (see the CONTROL manual). In this MAPCHAR SET, an alternative, representable notation can be assigned to each national special character.
If it is not possible, e.g., to represent the character 'ä', and the alternative notation 'ae' is assigned to the character 'ä' in the MAPCHAR SET, the character 'ä' can be mapped to the character sequence 'ae' by applying the function "mapchar" (see the Reference Manual).