TheÂ Human Resources in Science and Technology (HRST)Â domain provides data onÂ stocksÂ andÂ flowsÂ (whereÂ flowsÂ in turn are divided intoÂ job-to-job mobilityÂ andÂ education inflows). StocksÂ andÂ flowsÂ are the main statistics for HRST. Their methodologies interlink and are therefore presented together in one single metadata-file. This metadata-file is duplicated in the structure of Eurostat's online database, while statistics for stocks and flows are found in separate folders. Several breakdowns are available forÂ stocksÂ andÂ flowsÂ indicators: sex, age, region, sector of economic activity, occupation, educational attainment, fields of education, although not all combinations are possible. The data onÂ stocksÂ andÂ job-to-job mobilityÂ are obtained from the European Union Labour Force Survey (EU LFS). The National Statistical Institutes are responsible for conducting the surveys and forwarding the results to Eurostat. The data onÂ education inflowsÂ are obtained from Eurostat's Education database and in turn obtained via the UNESCO/OECD/Eurostat questionnaire on education. The National Statistical Institutes are responsible for conducting the surveys, compiling the results and forwarding the results to Eurostat. Please note that for paragraphs where no metadata for regional data has been specified, the regional metadata is identical to the metadata provided for the national data.