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
- Pavel Stepanovich Mochalov
- Pavel Varfolomevich Kusnetsov
- Pavel Vasil'evich Kopnin
- Pavel Vasilyevich Annenkov
- Pavel Vezhinov
- Pavel Vilikovský
- Pavel Vladimirovich Zasodimsky
- pavement
- pavement behavior
- pavement classification number
- pavement condition and performance monitoring
- pavement design
- pavement design of interlocking block
- pavement design service life
- pavement durability
- pavement heating and mixing machine
- pavement heating machine
- pavement maintenance
- pavement management system
- pavement mechanical analysis
- pavement modulus back-calculation
- pavement of forest road
- pavement performance
- pavement performance index
- pavement recycling