Entity Framework 6 - Knowledge Base (KB)

NHibernate vs. ADO.NET Entity Framework

So the ADO.NET Entity Framework has gotten a little bit of bad press (in the form of blog entries and a petition) but I don't want to rush to judgement. I'm limited in time for experimentation but I was wondering has anyone worked with it yet with more em...

Why isn't ODBC supported by Entity Framework?

Is there a specific reason that the EF requires new data providers and can't make use of ODBC? I figured it had to be some ORM specific problem, but NHibernate works fine via ODBC....I'm using NHibernate and can continue to use Nhibernate, but I worry th...

NHibernate vs. Entity Framework 4

A lot has been talked about Entity Framework first version on the web (also on stackoverflow) and it is clear that it was not a good choice when we already have better alternative like NHibernate. But I can't find a good comparison of Entity Framework 4 a...

Trying to choose between NHibernate and Entity Framework?

What are the main advantages and disadvantages of NHibernate and Entity Framework 4.0?...(While tagging my question, I've noticed more NHibernate tags than EF. Is NHibernate more popular?)

Database upgrade problem with DevExpress XPO, NHibernate, and Entity Framework

What is the best practice for upgrading the database using ...ORM... (...DevExpress XPO..., ...NHibernate... or ...MS Entity Framework...)?...I'm starting a new project and have to pick an ...ORM.... The development process requires of releasing intermedi...

EF vs NHibernate vs Drapper ORM

I am trying to understand which ORM is fast in performance?...NHibernate support Level 2 caching can we compare its performance with EF or Drapper?...EF Code First looks promising, but do we have inbuilt Level 2 cache support for EF? ...Don't know much a...

Entity framework vs NHibernate - Performance

I am looking to implement an ORM into our system. We currently have many tables with lots of horrible data and stored procedures. I've heard using an ORM can slow the system down. Does anyone know which ORM is better on speed and performance using Queries...

NHibernate vs Entity Framework 6 performance for big number of users

I'm building big web application that should communicate with the database very often. I'm wondering what library should I use for communication NHibernate or Entity Framework 6?...Here is my application specs:...Users:... The application built for big n...

Subquery with Entity Framework

I'm porting a subsystem from ...NHibernate... to ...Entity Framework... and want to see the best way to port the following query to ...EF.......var date = DateTime.Now; // It can be any day AccountBalanceByDate abbd = null; var lastBalanceDateByAccountQue...

Adding condition to mapping for child collection in Entity Framework 6 similar to NHibernate's "where"

In NHibernate, there is a ...where... mapping that allows you to specify a condition on a property mapping that affects how it is pulled from the database. For example, if I wanted to implement a soft delete and exclude all deleted items from a set, I cou...

Entity Framework: storing as a list of complex type

I am kinda new with entity framework, I have the following scenario which I want to persist on DB with entity framework:...public class Period { public Period() { } public DateTime From { get; set; } public DateTime To { get; set; } } ...

Is there an ORM that can handle tables without PK?

I'm building a Web App that has to interact with a database that has multiple tables without PK....The database is designed intentionally like this and the schema sadly can't be modified....I tried using Entity Framework but it has a lot of issues with th...