SAP DB uses the UNICODE code in line with ISO 10646, Page 1. You can find general information on UNICODE in the following documentation:
The SAP DB Database System ® Terms ® UNICODE
The SAP DB Database System ® SAP DB as UNICODE Database
The names of the database objects (such as table or column names) can be stored internally in UNICODE and can therefore be displayed in the database tools in the required presentation code.
SAP DB supports the code attribute UNICODE for the data types CHAR[ACTER], VARCHAR, and LONG[VARCHAR] and is able to map various presentation codes to the UNICODE format.