实体联系模型 entity relationship model ; er model ; Entity-Relationship ; entity relatio hip model
实体-联系模型 Entity-Relationship Model ; E-R MODEL
也称为实体联系模型 Entity-Relation Model
普遍采用实体联系模型 Entity Relationship
扩充实体-联系模型 extended entity-relationship model
用扩展的实体—联系方法描述学科体系结构的概念模型。
The conceptual model of the discipline architecture is represented through an extended entity-relationship approach.
工程信息与实体模型联系紧密，方便了数据的读取和存储，使工程数据的管理安全有序。
Because the structure information associates with the entity model directly, it is easy to read and save the datas and safe to manage them.
空间数据模型是关于现实世界中空间实体及其相互间联系的概念。
Spatial data model is based on the principle of spatial entities and relationship between mutual.
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