理学 数据库系统 释 data model 数据模型 数据库领域中定义数据及其操作的抽象表示方式。数据模型是数据库系统的核心和基础。各种数据库管理系统（DBMS）软件都是基于某种数据模型的。
data model 数据模型
数据库 数据库理论 释文 data model 数据模型
- regular network
- regular n-gon
- regular nonagon
- regular norm
- regular normed space
- regular number
- regular number field
- regular observation
- regular octagon
- regular octahedron
- regular octahedron group
- regular one parameter subgroup
- regular one-parameter subgroup
- regular open set
- regular operation
- regular operator
- regular orbit
- regular ordinal
- regular ordinal number
- regular outer measure
- regular packing
- regular pair
- regular parameterized surface
- regular parametric representation
- regular parametrization