An ORM built by Microsoft and is available as part of .Net framework 3.5 and later.

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5
votes
2answers
138 views

How to organize predefined queries with Entity Framework?

I have some queries that I use all the time (like get rows only of some specific type, or count something etc.). I'd like to organize them somehow (better then I currently do). Currently I have them ...
1
vote
0answers
36 views

Managing different Return Types when calling a Stored Procedure in Entity Framework

I am using Entity Framework to call some Stored Procedures to return results for various reports. I would like some of these SPs to return some additional columns under certain conditions based on ...
4
votes
1answer
176 views

How do you guarantee that your database context is disposed of properly when your lazy collection is no longer needed?

I'm looking for a best practices kind of answer here. Given that best practices for interacting with classes that implement IDisposable is via the Using statement - What is the best practice for ...
0
votes
0answers
24 views

Organizing Entity Framework Code First Migrations

I recently started a small test app using EF 6 Code First so that I can learn / practice using EF and databases (I'm a front end developer). As I am developing I will want to make changes the POCO ...
1
vote
1answer
137 views

Does snapshot change tracking break DDD principles?

I'm building a website with MVC 5 and Entity Framework 6, implementing the Unit of Work & Repository patterns, and - for flexibility and performance - would like to utilize Entity Framework's ...
1
vote
1answer
72 views

Stateless Web Applications Defeat DBContext Somehow?

In Entity Framework, the DBContext class is said to implement the unit-of-work pattern. As I interpret this, it means that if you make a DBContext, manipulate its data, and then dispose of it, then ...
0
votes
1answer
27 views

Updating particular properties of EF objects every X amount of days in MVC

I'm building an MVC ASP.NET IMDb-like website which presents various information about movies to users, relying on 3rd party APIs to (initially) fetch movie info. The IDs representing each movie on ...
2
votes
2answers
256 views

Database performance comparison

I have been tasked with moving from a MSSQL backed database, entity framework code-first, wcf service based MVC application to a MySQL backed database. I have had being trying to find a performance ...
1
vote
1answer
149 views

Repository pattern without entity framework?

Is it possible to implement the Repository pattern without using entity framework? I am working on a small dev team of 3 on a small scale (for now) ASP.NET MVC solution. I told my manager that I ...
0
votes
0answers
77 views

Entity Framework and separating DAL from domain entities

If I have a normalized db, it's unlikely to map 1 to 1 with my domain entities. So I customize my EF entities to fit the domain. But now my EF entities are essentially my domain entities and my DAL is ...
0
votes
2answers
231 views

Bad Practice using Auto Generated Classes for Data Access

I've seen this before but haven't found concrete reasons. When you add Entities to your EF model, EF auto generates classes for these entities. In terms of DataAccess, why is it preferred to not ...
0
votes
0answers
79 views

MVC Sites and Entity Framework (using DbContext)

I've been looking at a couple of the MVC tutorials on the ASP.NET website and and have noticed numerous of them make use of Entity Framework (especially the Identity provider stuff). Maybe my ...
1
vote
0answers
115 views

Entity Framework Lookup Tables

I am coming from working with ADO.net DataSets and feel fairly comfortable with how they work. Mainly, I usually have a DATA table with a large number of REF tables for lookups. In DataSets it was ...
2
votes
1answer
81 views

How to represent an optional-to-optional relationship in a database

I have two types of users: a CRM user and a system user. We have a record of every CRM user, thanks to a nightly sync that we run (so we don't have to hit the CRM API every time). We have system users ...
0
votes
1answer
85 views

Inverse property naming (ORM scenario) [closed]

I have a class that represents a process. In this process there are inputs boxes and output boxes. public class Process { public long ProcessId { get; set; } public virtual List<Box> ...
0
votes
1answer
269 views

Using Code First concept of Entity Framework in production

I'm developing an application and I have a database with it using Entity Framework Code First concept. I like this approach very much. I'm using the latest version of EF which is 6.1.1. My main ...
1
vote
1answer
109 views

Controller / Service - Should a service save changes to the database

I have an action on my controller called DeleteLine. This removes a line from the users basket. My controller action looks like this: [HttpGet] public ActionResult DeleteLine(int orderId, int ...
1
vote
0answers
105 views

Entity Framework Code First Centralized database deployment

I originally posted this on stack overflow but was told that here is a better place to ask this kinda stuff. I couldn't find any other similar answered question but if there is one please give me a ...
3
votes
1answer
226 views

How to store a potentially large amount of optional properties of objects?

I'm using Entity Framework Code First with ASP.NET MVC. This handles my database design based on the domain models within my application. As it stands, the engine I'm writing will have a website ...
2
votes
1answer
423 views

Should you reuse an Entity Framework EDMX between multiple solutions?

We currently have 1 giant EDMX for our corporate database. It, along with all of the generated POCOs, are in a separate project (we'll call it the EDMX project) which we pull in to any solution that ...
0
votes
0answers
135 views

Row and Field level Security Management through Code First EF, WebApi2

I could not find such question specific to asp.net webapi row level security on SO. I am building an API through .NET Webapi2 with Entity Framework. I am trying to assess various options that are ...
4
votes
2answers
3k views

Should an ASP.NET MVC application directly use Entity Framework as the model?

I'm building my first MVC application in Visual Studio 2013 (MVC 5) and I'm a bit unclear on the best way to setup my model. I've generated an entity framework model using code-first from an existing ...
2
votes
2answers
159 views

How do I write my BLL to make it re-usable?

Most of it was written 4-5 years ago. Our teams long term objectives are to use Entity Framework. Though we aren't gonna do it right away as our deadlines aren't allowing us to do so. Now we have our ...
0
votes
2answers
215 views

Is a mocking framework useful if I'm unit testing a repository/database? [duplicate]

I'm trying to improve my testing skills. I frequently hear about mocking framework to build fake objects (as far as I understand). Right now I need to test my repository (the usual add, remove, update ...
0
votes
0answers
82 views

Proper Architecture for DBContext and Migrations with Multiple Projects

I have multiple projects that will be using the same business objects (customer, order) but the projects operate in different databases within the organization and I would like to understand the ...
4
votes
1answer
567 views

Repository Pattern: Exposing Data Context to Underlying Layers

My team is in the process of updating a legacy project. We've decided to incorporate the Repository Pattern along with Entity Framework in our Data Access layer. Below is a high-level view of this ...
3
votes
5answers
363 views

Is DDD not appropriate for my website or should I introduce a Query Layer?

I have inherited an ASP.NET website application and the previous developer has used what I believe are some DDD concepts. I am new to DDD and I have to admit I am struggling with the practical side of ...
2
votes
1answer
1k views

What are the benefits of using entity framework code-first instead of designing my database using SQL?

I'm currently working on designing a small web application (MVC5) and I'm to the point of designing my database. I have the schema I want worked out and I am quite proficient in SQL Server. (I have my ...
2
votes
2answers
147 views

Communication/Updates between units of works/entity framework contexts, colliding with user changes

I'm developing a WPF application using Entity Framework for my database communication. The application has a hierarchy of tabs where each tab has a db context. Each tab allows the user to view some ...
2
votes
2answers
2k views

How to model users accounts in ASP MVC Framework with Entity Framework using code-first approach?

How do you design your code-first approach in entity framework when your code should include user data (name, password...) without repeating/overwriting what the MVC framework will generate in terms ...
2
votes
1answer
125 views

Using json as database with EF, how can I link EF and the json file during DbContext initialization?

For a personal testing-project I am considering to create a SPA with the following technologies: ASP.NET MVC + EF + WebAPI + AngularJS. The project will make use of small amount of data, so I was ...
1
vote
0answers
140 views

What strategy to follow while matching sql server datatypes in C# Code First approach while using Entity Framework

While matching SQL Server datatypes with C# Code First Approach in Entity Framework, what are specific points that we should keep in mind so that our C# datatype should match exactly our SQL Server ...
1
vote
1answer
127 views

Is table inheritance the wrong approach

If we take the two below entities as en example. public class Person { public string Username {get;set;} public string DisplayName {get;set;} } public class Worker:Person { public string ...
4
votes
2answers
309 views

Entity Framework with no direct table access

There are some similar questions I've found here, but none of them fully answer the question I'm asking. Similar questions: here and here In my company, I develop C# .NET applications and our Server ...
1
vote
2answers
429 views

Is it faster to query using linq-to-entities or a data adapter?

I'm creating an MVC application in VS2012 and I reverse-engineered the models from existing Oracle tables. The tables are part of a MASSIVE database. Besides the main tables that I need to insert, ...
0
votes
1answer
90 views

I recently read about unit of work and repository design patterns; working with EF wondering if this is a good design pattern

I found myself creating child records that require a master record to exist, first, so that they can reference it by the master record's primary key (if that's the right term). To accomplish this ...
1
vote
2answers
109 views

How far can I drift from my original domain model and still have the benefits of an ORM?

I have the following domain models: public class User { public int Id { get; set; } public ICollection<Product> Products { get; set; } } public class Product { public int Id { ...
2
votes
1answer
552 views

Confused on how to properly employ a Repository Pattern with Service/Business Layer on top

I'm building a ASP.NET Web Api 2 solution for learning purposes, and I've hit a snag. I was wondering if anyone could tell me what exactly it is that I'm missing. My Web Api solution has 4 Layers: ...
1
vote
2answers
461 views

Repository Pattern: Doctrine2 vs Microsoft Entity Framework?

I have been using Symfony2 with Doctrine2 for some years. I have recently started using Microsoft's Entity Framework with MVC5. From my Symfony2 experience I understand that a repository's job is only ...
1
vote
0answers
88 views

Is it improper to have an application wide source for dropdown binding

The WPF Combobox needs to bind a collection to it's ItemsSource and something to bind the selected item or value to. Until now, I've included both the collection and the selected value properties that ...
0
votes
1answer
137 views

Entity Framework 6 Conventions

I use the Entity Framework often, but I have one area of confusion I would like to understand better. If I wanted to have a navigation property in an Entity such as public virtual ExampleObject ...
1
vote
0answers
396 views

What's the best way to expose a Model object in a ViewModel?

In a WPF MVVM application, I exposed my model object into my viewModel by creating an instance of Model class (which cause dependency) into ViewModel. Instead of creating separate VM properties, I ...
3
votes
1answer
291 views

Why DbContext object shouldn't be referred in Service Layer?

I've been looking for some implementations of Service Layer and Controller interaction in blogs and in some open source projects. All of them seem to refer DbContext object in repository classes but ...
1
vote
2answers
515 views

Correct way to inject dependencies in Business logic service?

Currently the structure of my application is as below Web App --> WCF Service (just a facade) --> Business Logic Services --> Repository -> Entity Framework Datacontext Now each of my Business logic ...
0
votes
2answers
1k views

In what situation do Entity Framework enums become useful?

I am working on a project where there will be plenty of static options being stored in the database. I looked at using Enums for this, but do not see how they could be useful. They do not create any ...
2
votes
1answer
828 views

entity framework 6 agnostic enough different sql server and OS platforms?

It's my first time using sql server, I usually go with MySQL, so I'm unsure how to do this. The project I'm assigned will be deployed to multiple platforms particularly PC's with different SQL server ...
2
votes
0answers
538 views

Entity Framework - Loading Related Entities Explicitly

I have been using Entity Framework for a few years. I have flip-flopped between calling out to repositories in my business logic or using lazy loading to retrieve data as I work my way through the ...
2
votes
5answers
325 views

Create Database To Fit Data vs Make Data Fit The Database

I'm newish to programming and would like to know what people have found to be the most supportable option or rather what people find more understandable. I'm the only one writing code at my firm, but ...
2
votes
4answers
246 views

At what point does data access\manipulation logic becomes business logic?

Consider a service which updates PersonDetail tables in database. I am Using EF which maps the table to this Entity. When a record is updated, it is not actually updated but a new record is created ...
0
votes
2answers
1k views

How to connect mvc application using entityframework or ado.net?

I am an ASP.NET developer. I want to learn ASP.NET MVC. In fact I am learning it. But Now I am confused at a point. How can I connect my database to my application. Using entity framework or linq or ...