Programming VIP

https://docs.microsoft.com/zh-cn/ef/core/modeling/relationships 1. Introduction to terms Dependent entity: a dependent entity, an entity containing foreign keys, and a child in an entity relationship.Principal entity: principal entity, entity containing primary key / alternate key, and parent entity in entity relationship.Principal key: ...

Fluent API EF is also an ORM tool, and mapping is always the core part. Therefore, next, the mapping configuration of EF in Code First mode is introduced in detail. There are two ways to implement the mapping model through Code First: Data Annotation and Fluent API. Data Annotation needs to represent the mapping information such as primary k ...