If, however, the majority of your data fits better in a highly structured entity-relationship model and is less document-like and more intertwined, then choosing an NXD might not help your situation.
但是，如果大多数数据更适合采用高度结构化的实体-关系模型，数据不太像文档并且关系更复杂，那么选择NXD可能并不合适。
The final ERD (entity relationship model diagram) and system datum dictionary are given through data sheets normalization during logic design and physical design.
在逻辑设计与物理设计过程中通过数据规范化后得出最终的ER模型图并给出系统数据字典。
In this paper, we give a temporal er - method - based data model, that is the temporal Entity Relationship model (TER).
本文给出了一个基于E- R方法的时态数据模型，即时态实体-关系(TER)模型。
Database design: an OLTP system usually adopts an entity-relationship (ER) data model and an application -oriented database design.
数据库设计：通常，OLTP系统采用实体-联系(ER)模型和面向应用的数据库设计。
Every aggregation type corresponds to a data structure diagram and an entity relationship model.
每种聚合类型对应一种数据结构图和ER模型。
Every aggregation type corresponds to a data structure diagram and an entity relationship model.
每种聚合类型对应一种数据结构图和ER模型。
应用推荐