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Can a single table have both primary and foreign key?
A table can have only one Primary Key. A table can have any number of Foreign Keys. The primary key is unique and Not Null.
Can 1 primary key have 2 foreign key?
The FOREIGN KEY constraint differs from the PRIMARY KEY constraint in that, you can create only one PRIMARY KEY per each table, with the ability to create multiple FOREIGN KEY constraints in each table by referencing multiple parent table.
Should all tables have a primary key?
Every table can have (but does not have to have) a primary key. The column or columns defined as the primary key ensure uniqueness in the table; no two rows can have the same key. (The data foreign key column must exist in the primary key column in the first table.)
Can a primary key be used as a foreign key twice?
yes, there is no problem with that…you can use a primary key of one table in other table as foreign key two times.
Is it OK to have two foreign key columns?
It is perfectly fine to have two foreign key columns referencing the same primary key column in a different table since each foreign key value will reference a different record in the related table.
How to ask MySQL about two foreign keys?
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How to generate foreign keys in Entity Framework?
This is currently what was generated by Entity Framework : Can anybody tell me if this is the correct way to do this? So my classes would basically look like this? Or does the configuration in OnModelCreating mean I don’t need some of the foreign key related code in my Fixture class?