理学 数据库系统设计 释 entity-relationship model 实体关系模型 通过客观事物及其联系进行形式化描述的数据模型。又称实体-联系模型、E-R模型。
数据库 数据库理论 释文 entity-relationship model 实体-联系模型
- many-valued analytic function
- many-valued composition law
- many-valued disjunction
- many-valued function
- many-valued inverse function
- many valued logic
- many-valued logic
- many-valued logic approach to paradox solution
- many-valued mapping
- many-valuedness
- many-valued proposition logic
- many-valued singular point
- many-worlds interpretation
- Manzanillo
- Manzini
- Manzini Region
- Man’s Place in Nature and Other Essays
- Man’yō-shū
- Man，Isle of
- MAO
- maobian paper
- Mao Bingquan
- Mao Chang
- Mao Daru
- Mao Duanqing