| # 实体类型关系 (tgerm1140s000) 使用此进程以 maintain the entity-type relationship details. 相关主题 Entity Relationship Modeling 实体关系图 A graphic design of the relational data model structure. The diagram shows a (multilevel) structure that consists of entity types and entity type relationships. Entity Rel. Diagram The description or name of the entity-relationship diagram. 注意 The maximum length of the description is 60 characters. 版本 A group of model items that share some characteristics, such as the customer, owner, and effective date. Version The description or name of the version. 数据实体关系 A reason of relevance for associating entities of one or two entity types. 自实体类型 The first entity type in the entity-type relationship. 示例 The entity relationship between an order and an order line is a 1:N relationship. An order is related to one or more order lines. Vice versa, an order line is related to only one order. In this entity relationship the order is the first entity type. From Entity Type The description or name of the entity type. 至实体类型 The second entity type in the entity-type relationship. 示例 The entity-type relationship between an order and an order line is a 1:N relationship. An order has one or more order lines. Vice versa, an order line is related to only one order. In this entity-type relationship the order line is the second entity type. To Entity Type The description or name of the entity type. 说明自 - 至 The description that identifies the from-to relationship. The description must be a verb in the third person singular. 示例 An order is detailed by one or more order lines. For this relationship the From-To description is: is detailed by. if the relationship is a horizontal line with the name located above, then the diagram should be read from left to right. If the name is located underneath, then the diagram should be read from right to left. if the relationship is a vertical line with the name located on the left, then the diagram should be read from top to bottom. If the name is on the right, then the diagram is read from the bottom up. 说明至 - 自 The description that identifies the to-from relationship. The description must be a verb in the third person singular. 示例 An order line details an order. For this relationship, the To-From description is: details. if the relationship is a horizontal line with the name located above, then the diagram should be read from left to right. If the name is located underneath, the diagram should be read from right to left. if the relationship is a vertical line with the name located on the left, then the diagram should be read from top to bottom. If the name is on the right, then the diagram is read from the bottom up. 关系为子类型 如果选中此复选框， the entity-type relationship is a subtype relationship. 存在物理数据库关系 如果选中此复选框， the entity relationship is equal to an ERP data dictionary relationship. 相关表 An entity type that is used to link two other entity types that have a many-to-many relationship between them. Associative Table The description or name of the associative entity type. 关系类别 A division within a system of classification. Most model items can be categorized. Relationship Category The description or name of the category. 最小基本关系类型自 - 至 无限 如果选中此复选框， the maximum from-to relationship is infinite. 最大基本关系类型自 - 至 最小基本关系类型至 - 自 无限 如果选中此复选框， the maximum to-from relationship is infinite. 最大基本关系类型至 - 自 所有者 The login of the owner. Owner The name of the owner. 生成日期 BY default, the date when the entity relationship was generated. However, any authorized user can change the date into another date. 已过期 如果选中此复选框， the entity relationship has expired because the version it is in is no longer valid. 上次修改的用户 The login of the user who made the latest change to the entity-type relationship. User Last Change The name of the user who made the latest change to the entity-type relationship. 上次更改 The date when the latest change was made to the entity-type relationship. 文本 如果选中此复选框， text is available that provides you with more information about the entity-type relationship. |