ef-database-first

I have interesting problem to solve but, although common, it looks like it's not easily achievable with Entity Framework. There are two tables: Player(Id,TeamId,FirstName,LastName) Team(Id, Name, IsProfessional) Player can belong only to one team. Using TPT (DB first), we have two classes mapped to those tables: public class Player { public int Id{get;set;} public int TeamId{get;set;} public string FirstName{get; set;} public string LastName{get; set;} public Team Team{get;set;} } public class Team { public int Id{get; set;} public string Name{get;set;} public bool IsProfessional{get;set;}

Let's say we have four entities in data model: Categories, Books, Authors and BookPages. Also assume Categories-Books, Books-Authors and Books-BookPages relationships are one-to-many. If a category entity instance is retrieved from database - including "Books", "Books.BookPages" and "Books.Authors" - this will become a serious performance issue. Moreover, not including them will result in "Object reference is not set to an instance of an object" exception. What is the best practice for using multiple Include method calls? Write a single method GetCategoryById and include all items inside

I am using Entity Framework 5, DB first. I know how to define an enum on my model, and set the type of a field to that enum. Now, I have a requirement to map a field MyField to an enum that is defined externally, i.e. not in the EF model ( OtherNamespace.MyEnum ). The designer does not allow me to set the type to anything outside the model. I tried editing the edmx file manually, but that causes an error: Error 10016: Error resolving item 'MyField'. The exception message is: 'Unresolved reference 'OtherNamespace.MyEnum'.'. OtherNamespace.MyEnum is referenced by my project. How do you do it?

We are using Entity Framework 6.0.0 and use database first (like this) to generate code from tables and stored procedures. This seems to work great, except that changes in stored procedures are not reflected when updating or refreshing the model. Adding a column to a table is reflected, but not adding a field to a stored procedure. It is interesting that if I go to the Model Browser , right click the stored procedure, select Add Function Import and click the button Get Column Information we can see the correct columns. This means that the model knows of the columns, but does not manage to

Assumptions Using EF 6.1, MVC 5, VS 2013, C# I have an existing database model designed in Toad DM for SQL Server and it's very important keep it always updated Steps and Notes Using ADO.NET Entity Data Model I chose Code First from Database ( new feature in EF 6.1 ) to generate the models. Note: Model classes and DbContext class generated successfuly but NO .edmx or .tt file was generated . Next I added a new scaffold item: MVC 5 Controllers with views, using Entity Framework. Note: Success, controllers and views generated Question From now on I don't want to use Code First to update my

I'm using ASP.NET Identity (Database First) in my ASP.NET MVC application. I followed the instructions here , to set up the ASP.NET Identity with database first approach. My AspNetUsers table has a relationship with the Employee table (The Employee table has a UserId foreign key, and the AspNetUsers entity has an ICollection<Employee> property). I would like to add the ICollection<Employee> property to the ApplicationUser, like below: public class ApplicationUser : IdentityUser<int, CustomUserLogin, CustomUserRole, CustomUserClaim> { public ICollection<Employee> Employees { get; set; } public