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.
This database is designed based on a hierarchical classification system.
分類体系 is a general classification system, while 階層分類体系 specifically emphasizes a hierarchical, tree-like structure.
Compound of 階層 (hierarchy), 分類 (classification), and 体系 (system). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.