entity framework book

[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

Entity Framework 6 Recipes Chinese translation series (11), entityframework For the original intention of translation and why I chose Entity Framework 6 Recipes, see the beginning of this series.Chapter 3 Query The previous chapter shows modeling methods for common database scenarios. This chapter shows you how to quer

Average time consumed Current mechanism (simplified) 0.007 0.35 0.02 0.014 0.09775 LINQ to SQL 0.023 0.083 0.102 0.068 0.069 Entity Framework 0.238 3.084 0.009 0.006 0.83425 Read and Write 10 data records for the second time Read/write mode Read duration Add time

Based on the previous two diaries, I believe you have learned how Entity Framework code first can infer and establish one-to-many and many-to-many relationships between tables in the database based on the dependency between classes. In this diary, We will detail how Entity Framework code first establishes a one-to-one

I recently studied Microsoft's ef. After studying this time, I feel that this EF is not perfect yet. However, it is said that in. net4.0, Microsoft will recommend this framework and improve it. In addition, all databases now support EF. Therefore, you can study the following for future technical preparations. However, I personally think that this framework is used with caution in actual projects. The foll

Stored ProceduresStored procedures exist in any relational database, such as Microsoft's SQL Server. A stored procedure is some code that is contained in a database, usually performing some operations on the data, which can improve performance for data-intensive computations and perform some business logic. When you use data, sometimes you get them through stored procedures.In this chapter, we explore some of the areas that EF needs to focus on when using stored procedures. We also use stored pr

If you have not touched on or do not know what Entity Framework is, please refer to some basic concepts and operation methods of the Entity Framework here. In a word, Entity Framework is a new data operation

Today, I saw a wonderful article on the boy's blog.ArticleAstoria to SQLite to Entity Framework to build your ORM concept. the article tells a lot of wonderful content, from SQLite for ADO. NET 2.0 data provider to the Entity Framework EF, as well as the concept of ORM, lists the complete views of ORM: This articl

Entity Framework 4.1: bypasses EF query ing, entityframework Original article name: Entity Framework 4.1: Bypassing EF query mapping (8) Address: http://vincentlauzon.wordpress.com/2011/04/21/entity-framework-4-1-bypassing-ef-quer

honor. Just reinstall SQLServer again (fix and install it ), although it said that it cannot coexist with the old version of VS on the same machine, but I installed VS2013.2 again, everything works normally. (If there is any risk, do not follow suit. I am not responsible for all consequences) Sometimes you edit a project, and everything is calm, but when you save, close vs2014, and open vs2014 again to open the project, the "Reference List" in the project will remain in the loading state, after

of a class, including inherited, are mapped to columns in the corresponding table, which is known as a table (Table-per-concrete Class) inheritance for each specific class. If you implement TPC inheritance for the Person,student and instructor classes, then the student and instructor tables will be no different from the previous one.The TPC and TPH inheritance patterns in the Entity Framework are generally

Create an ASP. NET Core MVC application (3)-Create a MySQL database table based on entity Framework Core (Code first) create a data model class (Poco Class)Under the Models folder, add a user class:namespace myfirstapp.models{public class User {public int ID {get; set;} public string Name {get; set; } public string Email {get; set; } public string Bio {get; set; } }} 1 2 3 4 5

ASP. NET Mvc5.0+entity Framework (EF) 6.1 Series TutorialsIt has been more than a year since the Webform+ado.net development model was converted to the ASP. NET MVC+EF development model. have been hoping to be able to write down a little bit of their own development, now make a list, encourage yourself to write down.1.1 Entity

Introduction of Entity Framework learning 2--objectcontext, ObjectQuery, ObjectStateEntry and Objectstatemanager classes This section briefly introduces the more important classes of ObjectContext, ObjectQuery, ObjectStateEntry, and Objectstatemanager in the EF. They are all located under the System.Data.Objects namespace under System.Data.Entity.dll. In subsequent chapters, we often use some of their meth

address was addressed by Address,city,region, Country and PostalCode this several combinations. Below, describe the specific steps to be done: Step one: Generate the Entity model The production of the entity model can be generated directly by the VS visual designer (if not, refer to the basic overview of the Entity Framew