Overview databases with historical longitudinal data

In the last 65 years several major historical databases with reconstructed life courses of large populations have been launched. Around 1990, we could find two important types...过去65年间，多个面向大规模群体、用于重构其生命历程的权威历史数据库相继建成并上线。约1990年前后，已出现两类重要的此类数据库类型。