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
- semi-stable state
- semistable vector bundle
- semistandard skew tableau
- semistandard tableau
- semistandard Young tableau
- semi-star
- semi-stationary
- semisterility
- semi-stochastic matrix
- semistor
- semi-strict
- semi strictly diagonally dominant matrix
- semi-strictly diagonally dominant matrix
- semi-strip
- semi-strong
- semi-strong efficient market
- semi-strong extremum
- semi-strong form efficiency
- semi-strong linear element
- semi-structural decision making
- semi-structured data
- semi-structured decision
- semi-structured interviews
- semi-structured model
- semi-structured observation