数据模型(Data Model)是对现实世界数据特征的抽象，用于描述一组数据的概念和定义。数据模型从抽象层次上描述了系统的静态特征、动态行为和约束条件。数据模型是数据库系统的核心与基础，数据模型是描述数据与数据之间联系、数据的语义、数据一致性约束的概念性工具的集合。
A Data Model is an abstraction of real-world data features used to describe concepts and definitions for a set of data. The data model describes the static characteristics, dynamic behavior and constraints of the system from the level of abstraction. Data model is the core and foundation of database system. Data model is a set of conceptual tools to describe the relationship between data and data, the semantics of data and the constraints of data consistency.
本文由数字化转型网（www.szhzxw.cn）转载而成，来源于网络；编辑/翻译：数字化转型网默然。
