entity framework book

Not long ago, I saw the news that Microsoft was preparing to open-source the Entity Framework. As soon as it was open-source, more students will definitely join the learning Entity Framework Team, therefore, I will write down some of my understanding of Entity

When we need to append data in large batches or query massive data at a time, we must note that the efficiency of the ado.net Entity Framework is almost intolerable. In a simple example, we insert about 5 million pieces of data into the database on the daily basis of the Chinese stock market over the years. It usually takes about 2 minutes to use ado.net, but EF, the time will change to half an hour. When w

Previously, the COUNT query statement generated by Entity Framework 4 was found, and the paging SQL statement generated by Entity Framework 4 was found today, but this problem does not exist in LINQ to SQL. >>> Let's take a look! Code: Check the generated SQL statement: 1. SQL statement generated by

Recently learning to study Microsoft's EF, through this time study, I feel this EF is not yet very perfect, semi-finished products. However, it is said that in. Net4.0, Microsoft will recommend the use of this framework, and will improve. And now basically all of the databases provide support for the EF. Therefore, to do technical preparation for the future can study the following. However, I personally feel that for the time being, it is prudent to u

Label:Original: http://www.cnblogs.com/dudu/archive/2011/12/27/entity_framework_sys_databases.html The "Trespass sys.databases" here refers to a query initiated by the Entity Framework by default: SELECT Count (*) from sys.databases WHERE [name]=n ' database name ' Note: This article is for the Entity Framework Code fi

method just created: Using System; using System. collections. generic; using System. linq; using System. text; using ProductEFDemo. business; namespace ProductEFDemo. presenter {public static class UpdateDateView {public static void UpdateProductUnitByUnitName () {try {Console. writeLine ("prepare to update data... "); UpdateData. updateProductUnitByUnitName (); Console. writeLine ("Update successful! ");} Catch (System. exception ex) {Console. writeLine (String. format ("error, error message:

Recently, I used ASP. net mvc Entity Framework to develop some projects, which makes it very easy to use. As a result, I have witnessed the development of Microsoft technology: -In this figure, we can clearly see the changes in data access methods. If you want to know about ADO. NET Entity Framework, you can directly

applications from the left menu Enter databasefirstsample as Name Select "OK" 3. Reverse engineer The ModelWe use the Entity Framework designer in Visual Studio to create the model. Project, add New Item ... Select data from the left-hand menu and select the ADO Entity Data Model Enter Bloggingmodel as the name, and then click OK

With the introduction of the latest major version of the Entity Framework EF6, the Microsoft Object Relational Mapping (ORM) tool has reached a new level of professionalism and is no longer a layman compared to the prestigious. NET ORM tools. The EF is fully mature and is moving beyond the previously widely used tools. The Entity

Entity Framework 6 Recipes Chinese translation series (9), entityframework For the original intention of translation and why I chose Entity Framework 6 Recipes, see the beginning of this series.2-10 Table per Hierarchy Inheritance Modeling Problem You have such a database table with a type or validation column. It can

Before writing: I want to decompile system. Data. entity. dll (4.0 version) through refector, and find that only the attribute declaration and method declaration are decompiled.CodeNone of them. It's a big deal. I tried a few. the same is true for other net4.0 DLL files, and the refector on my machine is the latest version. Later I thought the dll path was incorrect and I referenced C: \ Program Files \ reference assemblies \ Microsoft \

I keep thinking about what the stored procedure can do for our applications in EF?. SP execution efficiencyI have seen the performance analysis report of the ado.net team on EF and the comparison of the performance of the LINQ to entity, esql, and SQL statements,ADO. NET Entity Framework Performance Comparison Exploring-the-performance-of-the-ado-net-

), etc.interface-based abstract class Efrepositorybase in 4.Repository modeWe use an abstract class efrepositorybase to implement the methods in the interface, so that derived classes have methods defined in the interface and prevent Efrepositorybase from being instantiated directly. Public Abstract classEfrepositorybasewheretentity:baseentity {efcontext EF=NewEfcontext (); PublicDbsetEntities {Get{returnEf. Set(); } } Public intInsert (TEntity ent