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
- philosophy of biology
- Philosophy of Environmental Protection
- Philosophy of Fine Arts•Dramatic Verse
- philosophy of geoscience
- philosophy of history
- philosophy of identity
- philosophy of journalism
- philosophy of language
- philosophy of law
- philosophy of life
- philosophy of logic
- Philosophy of Logical Atomism
- Philosophy of Logics
- philosophy of management
- philosophy of mathematics
- Philosophy of Mind
- philosophy of mind
- Philosophy of Mythology and revelation
- Philosophy of Nature
- philosophy of nature
- philosophy of ordinary language
- philosophy of physics
- philosophy of praxis
- philosophy of religion
- Philosophy of Right