| Subject | English | Chinese Taiwan |
| comp., MS | data definition | 資料定義 (The attributes, properties, and objects in a database) |
| comp., MS | data definition language A language that defines all attributes and properties of a database, especially record layouts, field definitions, key fields, file locations, and storage strategy | 資料定義語言 (Data Definition Language) |
| comp., MS | data-definition query | 資料定義查詢 (An SQL-specific query that contains data definition language (DDL) statements. These statements allow you to create or alter objects in the database) |