| Subject | English | Japanese |
| comp., MS | data definition | データ定義 (The attributes, properties, and objects in a database) |
| comp., MS | data definition language | データ定義言語 (A language that defines all attributes and properties of a database, especially record layouts, field definitions, key fields, file locations, and storage strategy) |
| comp. | n Data Definition Language | データ定義言語 |
| comp., MS | data-definition query | データ定義クエリ (An SQL-specific query that contains data definition language (DDL) statements. These statements allow you to create or alter objects in the database) |