Original article name: Entity Framework 4.1: Optimistic Concurrency (6)
Address: http://vincentlauzon.wordpress.com/2011/04/17/entity-framework-4-1-optimistic-concurrency-6/We can see the English tutorial recommended for Entity Framework
Microsoft released the final version of Entity Framework (EF) 4.2. Although this update only contains one error correction, it is interesting that it applies Microsoft's semantic version control and they try to put EF and.. NET Framework, but they said the process was not as
updates are performed in the database.4. The entity that needs to be deleted has a deleted state, and DbContext later performs a delete operation in the database.5. For entities already in DbContext, you can pass Dbcontext.entry (entity). state = entitystate.detached mode to set the status to detached.Entity Framework Versio
In the development of the new version of the blog background of the blog garden, we have prepared the most advanced weapons to increase the pace of modernization of the garden. ASP. net mvc 3 has been installed before, and is currently experimenting with the latest new type of weapon, Entity Framework 4.1 RC, just intr
the following points of knowledge in this article:1. Install NuGet 2.8.6 or later;2, create a new project;3. Installation of the Entity Framework (EF7.0.0-BETA7);4, create the model;5, create the database;6, the use of models;You can view an example of this article on GitHub: Https://github.com/aspnet/EntityFramework.Docs/tree/master/docs/getting-started/full-dotnet/sampleNote: The
grammar, one more study cost.2) I think the Entity SQL is very well designed, very close to SQL, and the user basically does not need to spend any time to get started. Who wouldn't write about SQL?So I think, in order to innovate and innovation is a meaningless thing, everything must be service to the user, can not serve the user's innovation is meaningless.Of course, in addition to the cottage, alinq Dynamic also carried out a series of micro-innova
" that lets you expose any native query against the store as a "table" that can be mapped just as any other table (could t that updates must be stored med through stored procedures ). this flexible mapping, including the option to use stored procedures to process changes, is specified declaratively in order to account for the schema of the database evolving over time without having to recompile the application.
The Entity
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
concurrency, you can use database locks, known as pessimistic concurrency. For example, when you read a record from a database, you can lock it to read-only or update the state. If you lock a record to an updated state, other users will not be able to lock the record again, whether it is a read or update operation. If you lock a record as read-only, other people can lock it as read-only, but not update the operation.Management locks also have drawbacks, which can lead to more complex programmin
Note: The code example mentioned in this article > How to using the Entity Framework DB first in ASP.How to apply the entity Framework in ASP. NET CoreThe first thing to remind you is that the. NET core and the classic. NET Framework library are not generic, including
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
because it tells about other things around Entitiy Framework, such as LINQ to XML and LINQ to DataSet. I just received this book yesterday (Thank you Roger), but I believe it is very market-oriented.
As you can see here, these are good choices...
Wish your Entity Framework a smooth journey
Tip 3. Start a tour of T4
If you have read the
This article is the ABP Official document translation version, translated based on the 3.2.5 versionOfficial documents in four partsFirst, the tutorial documentIi. ABP FrameworkThree, Zero moduleIv. Other (Chinese translation resources)This is the first part of this article.The first part is divided into three articles1-1 hand-introduced door1-2 Advanced1-3 Miscellaneous (related theoretical knowledge)The first article contains two steps.1-1-1 ASP
Framework evolved from ADO. NET and is the first specific implementation of EDM. It can provide high-level abstraction when developing relational databases. In Version 1.0, the team has been focusing on building the Platform Foundation, not just a simple Orm, which allows developers to use very flexible ing to process conceptual models or object models, and can adapt to the existence of huge differences wi
can see here, these are good choices...
Wish your Entity Framework a smooth journey
Tip 3. Start a tour of T4
If you have readEntity Framework design blogYou should have heard about it.T4. This is a technology released together with Visual Studio 2008 (2005 has an independent version for download ).
In. net4
Entity Framework: A solid frame that looks at the name to know about the model data. This is an ORM tool introduced by Ms.
Comparison with NHibernate
1) Entity Framework package better, add, delete, change, query more convenient
2) The Entity
[EF] How to manually set the Migration job of Code First in Entity Framework, entitymigration
The Entity Framework (EF) has developed to the present, and the version has entered 6.1.0. It has been six months since I wrote the article "build an EF database in Code First mode
Entity Framework FoundationThis textbook will teach you how to use the Entity Framework, and we will use Entity Framework 6.0 and Visual Studio 2012.The following table is a major version
Oracle recently released Oracle Data Access Component (odac) 11. 2 rel 4, which adds the Entity Framework4.1 and 4.2 support. This allows. NET developers to use Oracle databases to apply this popular ORM tool and use LINQ to entities for data access without the need to write SQL statements.
Although the new Provider supports EF, it does not support the latest features, such as the code first and dbcontext i
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