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
- on-line concentrate moisture detection
- on-line concentration technology of capillary electrophoresis
- Online consumers
- on-line control of feed manufacturing
- online course
- on line data analysis
- on-line data analysis
- on-line data handling
- on-line data processing
- on-line debug
- on line detection
- on-line detection
- online detection with neutron
- online detection with γ-ray
- on-line diagnostics
- online dictionary
- online direct sales
- Online Education
- online education
- online education industry
- online electrochemical mass spectrometry
- on-line electronic patrol system
- on-line encryption
- online encyclopedia
- on-line equipment