階かい層そう分ぶん類るい体たい系けい

noun

hierarchical classification system

Technical term used in computing and information science for a system that organizes items into a tree-like structure of categories and subcategories.

• このデータベースは階かい層そう分ぶん類るい体たい系けいに基もとづいて設せっ計けいされている。

  This database is designed based on a hierarchical classification system.