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
- forward limit
- forward linkage and backward linkage
- forward long-term incremental cost
- forward looking infrared system
- forward market
- forward modeling of electrical logging
- forward modeling of gravity anomaly
- forward modeling of magnetic anomalies
- forward modeling of magnetic anomaly
- forward modeling of random medium
- forward motion compensation unit
- forward mutation
- forward operator
- forward osmosis
- forward osmosis membrane
- forward overlap
- forward problem
- forward rate
- forward reachability
- forward reaction
- forward reasoning
- forward recovery
- forward regression
- forward rendering
- forward scattering