International Standard Classification of Occupations for European Union purposes (ISCO-88 (COM))
0 Total
1 Legislators, senior officials and managers
2 Professionals
3 Technicians and associate professionals
4 Clerks
5 Service workers and shop and market sales workers
6 Skilled agricultural and fishery workers
7 Craft and related trades workers
8 Plant and machine operators and assemblers
9 Elementary occupations
a Armed forces
b Unknown
International Standard Classification of Education (ISCED 1997)
0 Total of all level ISCED97 and no education
1 No education
2 All ISCED 1997 levels
3 Pre-primary education (level 0)
4 Primary education or first stage of basic education (level 1)
5 Lower secondary or second stage of basic education (level 2)
6 Upper secondary education (level 3)
7 Upper secondary education (level 3A), programmes designed to provide direct access to level 5A
8 Upper secondary education (level 3B), programmes designed to provide direct access to level 5B
9 Upper secondary education (level 3C), programmes not designed to lead directly to levels 5A or 5B; they lead directly to labour market, level 4 or other level 3 programmes
a Post-secondary non-tertiary education (level 4)
b First and second stage of tertiary education (levels 5 and 6)
c First stage of tertiary education, programmes that are theoretically based/research preparatory or giving access to professions with high skills requirements (level 5A)
d First stage of tertiary education, programmes which are practically oriented and occupationally specific (level 5B)
e Second stage of tertiary education leading to an advanced research qualification (level 6)
f Unknown
Age class
0 Total
1 From 15 to 24 years
2 From 25 to 34 years
3 From 35 to 54 years
4 From 55 to 74 years
Sex
0 Total
1 Males
2 Females
Unit of measure
0 Person
Geopolitical entity (reporting)
0 Bulgaria
1 Czechia
2 Denmark
3 Germany (until 1990 former territory of the FRG)
Population aged 15-74 by sex, age group, educational attainment level and occupation (ISCO 1988)
methods, notes and classification
Methods 
Variables