entity framework book

If you have been working with the ADO. NET Entity Framework, you have probably been extremely eager to get your hands on the next version that is now part of Visual Studio 2010 and. net 4.0. long referred to as "EF version 2," this version is now called Entity Framework 4 or EF4, to align with. net

Entity Framework-DB First method, entityframework EF (hereinafter referred to as Entity Framework) has three methods: DataBase First, Model First, and Code First. The following is the Db First method: 1. There are two tables in the database. One is a professional table and the other is a student table. One student can

In this article, we'll go on to the previous article, "LINQ to SQL and Entity Framework (top)", and continue to use LINQ to SQL and the Entity Framework to practice "Interpreting queries" to learn the key features of these technologies. We are here to focus on the "LINQ" section in LINQ to SQL and the

[Entity Framework series] Overview, entityoverview This article describes the history of the EF version, and describes the background and history of a technology. It helps us with the following: To put it bluntly, let's start with the question: EF (or EF 3.5) initial release . NET 3.5 SP1 Visual Studio 2008 SP1 Basic O/RM support using the Database First workflow EF 4 . NET

In the last diary, we discussed in detail how Entity Framework code first establishes a one-to-many relationship between tables. In this diary, we will introduce in detail the default behavior of the Entity Framework code first to establish many-to-many relationships, and how to change the default behavior through the

ADO. NET Entity Framework is an entity framework introduced by. NET Framework 3.5 SP1. It allows developers to focus on data through the Object Model (rather than the logical/Relational Data Model. The Entity

Original article name: Entity Framework 4.1: failed to define relationships (5) Address: http://vincentlauzon.wordpress.com/2011/04/15/entity-framework-4-1-many-to-many-relationships-5/ We can see the English tutorial recommended for Entity

both LINQ to SQL and the Entity Framework are object-relational mapping techniques that contain LINQ functionality. The essential difference between them is that EF does a better job of decoupling the database schema from the type of our query. With EF, the object we're querying is no longer a C # class that exactly corresponds to the database schema, but rather a higher-level abstraction: the

MVC5 Entity Framework Learning (1): Creating an Entity Framework Data modelMVC5 Entity Framework Learning (2): Implementing Basic CRUD FunctionalityMVC5 Entity

var m = new your model ();Db. Your Model.add (m);Db. SaveChange ();Response.Write (m.id); Perform. SaveChange () The ID value can be obtained directly after saving.There is no ID value before saving.When the Entity Framework inserts data into a database, if the primary key field is an auto-increment identity column, the self-increment is returned to the property corresponding to the

Transferred from Andrew's blog to the Entity Framework-query across Context Http://columns.chicken-house.net/post/e99ba3e6909ee79a84-Entity-Framework-e8b7a8e8b68a-Context-e79a84e69fa5e8a9a2.aspx First of all, I would like to express my gratitude to the author. below is the text, and I hope he can help you.

This article is a series of ASP. NET 4.0 and entity framework 4ArticleThe first article, this series will show you how to use entity framewok4 to Develop ASP. NETProgram. The article will teach you how to use entity framewok4 to create a database step by step. The created database will be used in later articles. Summ

Entity Framework 6 Recipes Chinese translation series (36), entityframeworkFor the original intention of translation and why I chose Entity Framework 6 Recipes, see section 6-12 TPC inheritance ing modeling at the beginning of this series. Problem 　　You have two or more tables with data similar architectures. You want

occurs because of each call to CTX. Before Orders.add (order), EF will call Detectchanges, which is explained on StackOverflow, and the address is: http://stackoverflow.com/questions/9439430/ Improving-performance-of-initializing-dbset-in-seed, in addition to the programming Entity Framework DbContext 60 of the book also has a Detectchange introduction.The solut

http://www.cnblogs.com/kenshincui/p/3280742.html#autoid-0-0-0 Overview When developing data-oriented software, we often make the effort to solve business problem entities, relationships, and logical building models, and the creation of ORM provides us with an elegant solution. The Ado.net Entity Framework is a ado.net-driven ORM framework in. NET development t

Series of entiy Framework practicesArticleThe entity relationship of the Entity Framework. Why write articles to clarify these relationships? When I first started using the Entity Framework, I had to take some difficult detours

Both LINQ to SQL and the Entity Framework are object-relational mapping techniques that contain LINQ functionality. The essential difference between them is that EF does a better job of decoupling the database schema from the type of our query. With EF, the object we're querying is no longer a C # class that exactly corresponds to the database schema, but rather a higher-level abstraction: the

Entity Framework - Data Persistence framework: Entity FrameWork Program through{Object Relational Mapping:ORM(Object Relational Mapping):created a "virtual object database" that can be used in a programming language}interacting with the