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Embed (e) at an association end is best explained as "in which table is the foreign key placed". This is often self-evident: | Embed (e) at an association end is best explained as "in which table is the foreign key placed". This is often self-evident: | ||
* One-to-Many - foreign key will go in many ends. | * One-to-Many - foreign key will go in many ends. | ||
Revision as of 22:16, 16 June 2024
This page was created by Henrik on 2018-01-16. Last edited by Edgar on 2025-01-20.
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Embed (e) at an association end is best explained as "in which table is the foreign key placed". This is often self-evident:
- One-to-Many - foreign key will go in many ends.
- Many-to-Many - foreign key will go into link-class(possibly implicit)
- One-to-One - This is where Embed-flag becomes important because it is optional where to put the foreign key.
If you do not know what end to pick - you can just pick any of them. However, as you grow more experienced, you might want to have the ability to control this.
If you set Embed=false on the many-end, you prevent the framework from doing the reasonable thing. The framework will then assume you have a good reason and create an implicit association class where it can put the keys.