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

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0
votes
2answers
591 views

WCF an Entity Framework connection

I have a 100+ users on a Silverlight application that uses WCF and entity framework. Everyone has their own database and here comes my problem. How do I make sure that only the user gets access to ...
2
votes
1answer
233 views

Are elements returned by Linq-to-Entities query streamed from the DB one at the time or are they retrieved all at once?

Are elements returned by Linq-to-Entities query streamed from the database one at the time ( as they are requested ) or are they retrieved all at once: SampleContext context = new ...
2
votes
4answers
591 views

What is the most effective order to learn SQL Server, LINQ, and Entity Framework?

I am trying to get some advice on what order I should learn about SQL Server, LINQ, and Entity Framework to be able to better work with ASP.NET Webforms and MVC. From what I've been able to learn so ...
9
votes
3answers
4k views

How should I implement the repository pattern for complex object models?

Our data model has almost 200 classes that can be separated out into about a dozen functional areas. It would have been nice to use domains, but the separation isn't that clean and we can't change it. ...
6
votes
2answers
385 views

How far should an entity take care of its properties values by itself?

Let's consider the following example of a class, which is an entity that I'm using through Entity Framework. - InvoiceHeader - BilledAmount (property, decimal) - PaidAmount (property, ...
0
votes
3answers
367 views

What's wrong performing unit test against concrete implementation if your frameworks are not going to change?

First a bit of background: We are re-architecting our product suite that was written 10 years ago and served its purpose. One thing that we cannot change is the database schema as we have 500+ client ...
4
votes
1answer
1k views

Possible to switch table at runtime using Entity Framework?

I have code to switch between databases when using EF, but now also need to allow the user to choose a particular table. (The tables all use the same schema but may have different names because of the ...
7
votes
1answer
660 views

Why is the use of the STE template no longer recommended for EF5?

I was looking to upgrade my project from EF4.1/Framework 4.0 to EF5/Framework 4.5. After reading up on migrating the t4 templates for STE's (Self-Tracking Entities), I came across this link that ...
29
votes
4answers
7k views

Entity Framework with large systems - how to divide models?

I'm working with a SQL Server database with 1000+ tables, another few hundred views, and several thousand stored procedures. We are looking to start using Entity Framework for our newer projects, and ...
19
votes
5answers
12k views

Is There a Real Advantage to Generic Repository?

Was reading through some articles on the advantages of creating Generic Repositories for a new app (example). The idea seems nice because it lets me use the same repository to do several things for ...
8
votes
2answers
5k views

Dependency injection with n-tier Entity Framework solution

I am currently designing an n-tier solution which is using Entity Framework 5 (.net 4) as its data access strategy, but am concerned about how to incorporate dependency injection to make it testable / ...
1
vote
2answers
1k views

Entity Framework Joining Tables With Ranged Foreign Key Relationships

I'm not sure if "Ranged Foreign Key Relationship" is an actual term or if I just made it up, but this is what I am talking about: AgeGroup Table int MinAge { get; set; } int MaxAge { get; set; } ...
5
votes
3answers
5k views

Is Entity framework reliable enough to use in a Corporate Project? Should I use Entity? [duplicate]

Possible Duplicate: Is Entity framework reliable enough to use in a Corporate Project? Should I use Entity? I'm a junior developer who's just completed a project using Entity framework. ...
3
votes
3answers
435 views

Why should I add CHECK CONSTRAINT?

Following is a table creating script created by Entity Framework using the model shown in http://codereview.stackexchange.com/questions/14077/is-it-proper-tpt-inheritance. In this script, there are ...
6
votes
1answer
371 views

Managing Entity Framework at Enterprise Projects (with hundred of tables)

I am using Entity Framework at my work and faced some problems. Usually I hear about creating tiny Edmx´s files containing tables related to some Domain ie.: Help Desk Edmx, HR Edmx, etc. Instead of ...
1
vote
1answer
494 views

Abstraction Layer over ORM Generated Entities

I am learning LINQ to SQL (and planning to learn Entity Framework). Initially I used a abstraction layer to convert LINQ to SQL entities into a domain objects. Later I discovered the “Inheritance ...
0
votes
2answers
327 views

Will TSQL become useless because of new ORMs? [closed]

By introducing LINQ to SQL, I found myself and my .NET developer colleagues gradually moving from TSQL to C# to create queries on the database. Entity Framework made that shift almost permanent. Now ...
0
votes
3answers
336 views

Software design approach for large relational database

I am working on a personal side project that will utilize a complex and large relational database. During the design of the database I had some co-workers give advice to how I should approach my ...
1
vote
2answers
869 views

With entity framework - who needs a DAL

On EF4 actions on entities are actually done via the Business Element layer (BE). Why do I need the Data Access (DAL) on another layer?
3
votes
3answers
740 views

Proper & Efficient Structure for an entity layer?

Context Web application based on the .NET Framework written in C# and following the MVC design pattern. Question What is the most efficient way to structure an entity layer consisting on various ...
2
votes
2answers
423 views

Is it considered best practice to dynamically bind return types from the Entity context?

MyDbEntities context = new MyDbEntities(); var result = context.StoredProcedureName(userId); In the situation above, is it considered best practice to use var or ObjectResult<ComplexType>?
1
vote
3answers
3k views

How easy it is to update Entity Model from database when enough code has already been written?

I am new to Entity Framework. I know there is an option to update model from the database, but I want to know how easy and successful is this task. I may need to update my model in a few weeks but ...
3
votes
2answers
990 views

Databinding to an Entity Framework in WPF

Is it good to use databinding to Entity Framework's Entity in WPF? I created a singleton entity framework context: To have only one connection and it won't open and close all the time. So I can ...
3
votes
5answers
579 views

Using XML field Vs. creating a table for unstable organization

I am in the middle of design an application to issue and store invoices for an organization. The problem is the organization is not stable at all. There are many types of invoices and they may ...
4
votes
3answers
2k views

Unit of work principle is causing a problem in MVC3 application

I am implementing a website using MVC3, Entity Framework 4.1 and Repositoty pattern, Unit of work principle. But I am facing a big problem while implementing this. I have developed a static ...
1
vote
1answer
829 views

Entity Framework and “ViewModel”

Earlier I asked a question about "Entity Framework and layer seperation" and found out that some people use a ViewModel to show their data in the UI. For example if we got a "Person" table and an ...
11
votes
3answers
9k views

Entity Framework and layer separation

I'm trying to work a bit with Entity Framework and I got a question regarding the separation of layers. I usually use the UI -> BLL -> DAL approach and I'm wondering how to use EF here. My DAL would ...
6
votes
3answers
4k views

DDD with ORM where should the business logic go?

I have used an MDA (model driven architecture) tool in the past where we modeled via UML and this generated the business entities (our domain model) and the ORM (mapping etc) amongst other things. A ...
5
votes
1answer
11k views

Entity Framework vs. Linq to SQL? [closed]

I'm a little bit confused about these two terms "Linq to SQL" and "Entity Framework". I have the general idea that both of them somehow allow you to refer to database tables as .net objects or ...
6
votes
4answers
586 views

Does EF mean you might never have to use SQL or design database tables again?

Does Entity Framework mean you might never have to use SQL or design database tables again? Is this what "persistence ignorance" means? I am new to EF and ORMs in general, and I would like to ...
9
votes
5answers
4k views

Should we bind view to a model property or ViewModel should have it's own..?

I am starting a project with following technical environment : .Net 4.0, Entity Framework 4.0, WPF with MVVM Architecture I saw lots of examples on the net, some books with this environment. In some ...
3
votes
1answer
551 views

ASP.NET MVC - should the MVC's M, V and C be explicitly aware of domain entities?

Since this question seems to be pretty subjective, I'm posting it here. Let's say you're writing your own version of Stackoverflow using ASP.NET MVC, so there are classes like Question, Answer, User, ...
3
votes
2answers
1k views

Organizing your Data Access Layer

I am using Entity Framework as my ORM in an ASP.Net application. I have my database already created so ended up generating the entity model from it. What is a good way to organize files/classes in the ...
5
votes
4answers
346 views

Multiuser System With Encrypted Database

I am currently developing a hosted solution in ASP.NET using MVC3 and Entity Framework. This product will then be made available to a number of clients as a hosted solution. As the data stored by ...
11
votes
3answers
4k views

Is it a good practice set connection strings in a web config?

Recently I have a discussion with some of my colleagues at my work because they said that it's better have in a .DLL a string connection encrypted. And I said why just don't use the string connection ...
7
votes
4answers
2k views

LINQ vs Data Access Layer

I've taught myself always to handle any data access code in a completely separate 'layer' to my business logic and UI code. This has always been a very good architecture for me and any 'rules' or best ...
94
votes
3answers
42k views

Is Entity Framework Suitable For High-Traffic Websites?

Is Entity Framework 4 a good solution for a public website with potentially 1000 hits/second? In my understanding EF is a viable solution for mostly smaller or intranet websites, but wouldn't scale ...
8
votes
1answer
469 views

Do ORM POCOs replace domain entities?

This is somewhat similar to this question but more broad. In general, with ORMs like EF 4.1 supporting POCOs, does it now make sense to have your domain entities be the objects that are persisted to ...
3
votes
2answers
640 views

Is Entity Framework the way to go for our situation?

A little overview about what my group does ... I work in a development team in a fairly large insurance company. My group's responsibility consists mostly of building applications for our employees. ...
21
votes
5answers
25k views

Should we use Entity Framework?

We currently have the following stack : VS 2005 Web forms SQL Server 2005 IIS 6 We are planning on transitioning to this : VS 2010 MVC and Web Forms SQL Server 2008 IIS 7 My question is, when ...
4
votes
3answers
2k views

Is the ADO.net Entity Framework appropriate when all you do is insert records in bulk?

My department develops software to migrate databases for our customers from their old CRM software to ours. In this process we could be inserting up do millions of rows, processed one at a time as we ...
8
votes
2answers
1k views

EF vs. NHibernate [closed]

In the past 2 years since I started writing business applications (before I did either high level front end or very low level systems programming), learned datasets, linq to sql, and now entity ...
47
votes
14answers
3k views

Is SQL important if I know ORM frameworks well? [closed]

I don't have any serious experience in SQL and I even hate to write SQL instead of LINQ. I am happy enough with ORMs. From the employers and sector view point, is it important to know SQL? Do I have ...
16
votes
8answers
3k views

Is writing your own Data Access / Data Mapping Layer a “good” idea?

We're currently in a situation where we have a choice between using an out-of-the-box object-relational mapper or rolling our own We have a legacy application (ASP.NET + SQL Server) where the ...
2
votes
3answers
323 views

Is EF4 mature enough with MySQL or Oracle?

Is Entity Framework 4 with MySQL or Oracle mature enough to be used on production level web application? Can it provide high level of performance, or should we stick with just plain data access with ...
13
votes
7answers
5k views

Is CodeFirst intended for large scale applications?

I've been reading up on Entity Framework, in particular, EF 4.1 and following this link ( http://weblogs.asp.net/scottgu/archive/2010/07/16/code-first-development-with-entity-framework-4.aspx) and ...
3
votes
3answers
1k views

Entity Framework book for beginners [closed]

I picked up Julia Lerman 1st edition book: Entity Framework book 1st Edition I started reading that and it was pretty good, but I'm wondering if there is even a more higher level book for EF? From ...
26
votes
3answers
6k views

Is Entity Framework Code First a bit meaningless/useless in production and what is a good EF strategy for production?

I have been programming recently with Entity Framework 4.1 Code First and am loving it for development, but with only an end plan and a rapidly changing feature list, I am constantly modifying the ...
7
votes
3answers
5k views

In ASP.NET MVC3 controllers, where do you instantiate your DataContext?

In your ASP.NET MVC 3 applications that use a DataContext or DbContext, where do you instantiate your data access object? Here is a non-exhaustive list of where I've seen it done: Individually ...
4
votes
1answer
577 views

How do you know if you should use Self-Tracking Entities or DTOs/POCOs?

What are some questions I can ask myself about our design to identify if we should use DTOs or Self-Tracking Entities in our application? Here's some things I know of to take into consideration: We ...