From a foreign key in a table, EF does not construct a foreign key association.

Which comes first: independent or foreign key associations?

I have a mental debate with myself every time I start working on a new project and I am designing my POCOs. I have seen many tutorials/code samples that seem to favor ...foreign key associations...:...Foreign key association...public class Order { public int ID { get; set; } public int CustomerID { get; set; } // <-- Customer ID ... } ....

Multiple foreign keys to same primary key table

I have a table with multiple fields that are foreign keys to a primary key in another table. For example :...Fixture Id (PK) HomeTeamId (FK to Team.TeamId) AwayTeamId (FK to Team.TeamId) HomeTeamCoachId (FK to Coach.CoachId) AwayTeamCoachId (FK to Coach.CoachId) ...Would it be better to separate this data into 2 tables HomeTeam and AwayTeam with a...

Entity Framework - How to Insert to table with foreign keys without retrieving foreign table rows first

I'm having a hard time finding the exact answer to this question, so my apologies if this is redundant....So I have 3 tables defined such that:...Person :PersonId, FirstName, LastName...Company: CompanyId, CompanyName...Order: OrderId, PersonId, CompanyId...On the Order table, there is a foreign key defined on the PersonId and CompanyId columns, th...

EF6 Does not generate foreign key association from database

PROBLEM:...I am trying to create a EF6 model using the database first approach. Simply speaking, I have 2 tables ...tblUser... and ...tblMilkMan... which have a foreign key relationship on the ...UserID... column. But when I create a new EDMX diagram and add the 2 tables:...I dont see the relationship ...No navigation properties are created...Pleas...

Entity Framework code-first set foreign key with primary key in same table

I have this ...WdUser... class inherited from ...SysModelBase...:...[Serializable] public class WdUser : SysDomainModelBase, IWdUser { [Display(Name = "UserName")] [MaxLength(25)] [Required] public string UserName { get; set; } [Required] [Index(IsUnique = true)] [MaxLength(25)] [Display(Name = "LoginName ")] pu...

Mapping foreign key to non primary surrogate key column in EF code first

public class A { [DatabaseGenerated(DatabaseGeneratedOption.Identity)] public virtual int Aid { get; set; } public virtual ICollection<B> B { get; set; } } public class B { [DatabaseGenerated(DatabaseGeneratedOption.Identity)] public virtual int Bid { get; set; } [Key] [Column(Order = 0)] ...

Delete the foreign key data when the data in the foreign table is deleted

I have 2 database tables, and I want when I delete a data in the table where the foreign key is pointing (where the primary key is), the foreign key pointing to that data also be deleted.... [HttpPost, ActionName("Delete")] [ValidateAntiForgeryToken] public async Task<ActionResult> DeleteConfirmed(int id) { Report report = a...

How create composite foreign key to table with composite primary key

I have two tables with composite primary keys:...public class Event { [Key] [Column(Order = 1)] public string ID1 { get; set; } [Key] [Column(Order = 2)] public int ID2 { get; set; } public DateTime EventDate { get; set; } public string DocID1 { get; set; } public int DocID2 { get; set; } ...}...public class Eve...

Entity Framework foreign key that is not a primary key

I am having problems with my MSSQL database design....I had 2 tables that looked like this:...CREATE TABLE tenants ( tenantId INT PRIMARY KEY, tenantName VARCHAR ) CREATE TABLE users ( userId INT PRIMARY KEY, userName VARCHAR, tenantId INT, FOREIGN KEY (tenantId) REFERENCES tentants(tenantId) ) ...I wanted to switch from ...

EF auto generates foreign key field while making database transaction which is not exist

I'm working on one project where we use entity framework for database transaction. While making a database transaction, if there's any reference key in particular table, then it autogenerates new field for that referenced entity which doesn't even exist....For Example:...I've one table called ...Stations... which has a ...reference of StationType...