In addition to important administrative classifications such as the classification of occupations (”Klassifikation der Berufe”), scales for the prestige (e.g. SIOPS) or status (e.g. ISEI) of occupations are outlined. Beside various German classifications, international classifications such as ISCO and SIOPS are also documented. Many of the occupational classifications presented are related to each other. For the coding of the ISEI, for example, you need the ISCO 88, which in turn can be coded from the KldB 92. These relationships between the classifications are shown under "Related classifications".