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Value Object’s New Mapping: EF Core 8 ComplexProperty
By:
Julie Lerman
Last updated: Tuesday, April 23, 2024
Published in: CODE Magazine: 2024 - May/June
In this article, Julie Lerman discusses the new ComplexProperty mapping feature in EF Core 8. She explains how ComplexProperty provides a superior way to map complex types and value objects compared to the Owned Entity mapping used in previous versions. Benefits of using the ComplexProperty include a simpler data modeling, improved performance, and the ability to share complex objects among instances. Lerman concludes by suggesting that developers can mix and match ComplexProperty and Owned Entity mappings until ComplexProperty is fully supported in future versions of EF Core.
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Some Overlooked EF Core 7 Changes and Improvements
By:
Last updated: Friday, February 24, 2023
Published in: CODE Magazine: 2023 - March/April
Great updates for EF Core 7 include explicit methods FromSqlRaw and FromSqlInterpolated. The SqlQuery method lets you pass in a raw SQL query to get scalar data directly from the database. And many more cool features. Read about them in Julie article.
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EF Core 7: It Just Keeps Getting Better
By:
Last updated: Wednesday, November 23, 2022
Published in: CODE Focus Magazine: 2022 - Vol. 19 - Issue 1 - .NET 7.0
It’s no surprise that Julie’s excited about the latest EF release. It’s faster, it allows bulk updates and deletes, it lets you map entity properties to database JSON columns, and you can map stored procedures the way you’re used to. There’s more, too!
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Tapping into EF Core’s Pipeline
By:
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2021 - March/April
Julie describes new EF Core 5 metadata features and how to use them, including ToQueryString, DbCloggerCategory, DbContext.SavingChanges, DbContext.SavedChanges, DbContext.SaveChangesFailed, Dotnet-counters, ChangeTracker.DebugView and Model.DebugView.
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Calling Stored Procedures with the Entity Framework in .NET 5
By:
Paul Sheriff
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2021 - January/February
Paul shows you how to avoid the frustration of having to determine a stored procedure’s function before you call it by using Entity Framework in .NET 5. Learn how to make calls to stored procedures using Entity Framework in .NET 5.x.
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EF Core 5: Building on the Foundation
By:
Last updated: Wednesday, August 31, 2022
Published in: CODE Focus Magazine: 2020 - Vol. 17 - Issue 1 - .NET 5.0
Julie’s pretty excited about the new features in EF Core 5. You will be too when you read about the bugs fixed, over 200 new features (including many-to-many support and the ability to filter when eager loading with the Include method) and minor enhancements and support for previous versions.
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When Open Source Came to Microsoft
By:
Richard Campbell
Last updated: Wednesday, June 9, 2021
Published in: CODE Magazine: 2020 - September/October
Why did Microsoft join the open source movement? Richard Campbell tells us the history of how Microsoft became an open source software company.
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Discovering AWS for .NET Developers
By:
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2020 - May/June
Learn a bit about how Amazon Web Services (AWS) supports .NET platforms including hosting ASP.NET Core apps.
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Entity Framework Core 3.0: A Foundation for the Future
By:
Last updated: Tuesday, September 22, 2020
Published in: CODE Focus Magazine: 2019 - Vol. 16 - Issue 1 - .NET Core 3.0
The latest release of Entity Framework gets it geared up for some big future changes. Julie shows you that the changes are nothing to sneeze at.
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Entity Framework Core 2.1: Heck Yes, It’s Production Ready!
By:
Last updated: Thursday, April 22, 2021
Published in: CODE Magazine: 2018 - July/August
With this release, EF Core has really matured. Julie takes you on a tour and points out some of the highlights of this labor-simplifying tool.
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Editorial
By:
Rod Paddock
Last updated: Tuesday, September 7, 2021
Published in: CODE Magazine: 2014 - July/August
Rod takes a look at how to evaluate the winners and losers when it comes to new technologies.
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Creating Collections of Entity Objects
By:
Last updated: Thursday, May 26, 2022
Published in: CODE Magazine: 2013 - May/June
Almost every programmer knows (unless you have been living under a rock for the last five years or so) that you should be using classes for all of your programming. You should also be using collections of objects instead of using a Data Reader, a DataSet, or a DataTable in your applications. The reasons for using collections are many and are explored in this article.
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Entity Framework 4.1: Code First
By:
Morgridge, Dane
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2011 - July/August
The Entity Framework team at Microsoft has been making several improvements since the launch of v4 with Visual Studio. The biggest of these is the capability to use a Code First or Code Only development model. Previously, if you wanted to work with the Entity Framework, you had to use either a Database First or Model First development model.
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POCO Support Comes to Entity Framework 4
By:
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2010 - November/December
When Microsoft first released the Entity Framework, agile developers roundly criticized it. These developers hold the tenets of domain-driven development and testability very high. The classes generated from the Entity Data Model (EDM) are very tightly bound to the Entity Framework APIs by either inheriting from the EntityObject or implement interfaces that allow the classes to participate in change tracking and relationship management.
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Using Entity Framework in Silverlight with Visual Basic
By:
Jeff Derstadt,
Jonathan Aneja
Last updated: Tuesday, February 19, 2019
Published in: CODE Magazine: 2010 - November/December
A common requirement in building applications is the need to serialize objects and pass them across tiers between the server and the client. These objects typically hold references to each other, and managing this “graph” and tracking all the changes so that they can be properly persisted to the database can get complicated quickly.
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ASP.NET MVC and the ADO.NET Entity Framework
By:
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2010 - September/October
Both ASP.NET MVC and the ADO.NET Entity Framework are both very popular topics right now in the developer community.Having spoken at various user group meeting and code camps it is very obvious to me what topics a lot of developers are interested in. I see that sessions about ASP.NET MVC or the Entity Framework are always packed with developers eager for more information. The focus of this article is the Entity Framework, but in the context of an ASP.NET MVC application. As such, I am assuming at least basic understanding of ASP.NET MVC but little-to-none with Entity Framework.
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Developing Database Agnostic Applications with Entity Framework
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2010 - March/April
Microsoft released Entity Framework, an ORM (Object Relational Mapping) tool, in 2008.Entity Framework gives developers the ability to be abstracted from the underlying relational database management system and allows them to talk to a database using familiar LINQ-based syntax.
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What’s New in Entity Framework 4, Part 2: Modeling Changes
By:
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2009 - November/December
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 the .NET Framework 4.0 version.
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What’s New in Entity Framework 4? Part 1: API Changes
By:
Last updated: Wednesday, August 31, 2022
Published in: CODE Magazine: 2009 - September/October
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 the .NET Framework 4.0 version.
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8 Entity Framework Gotchas
By:
Last updated: Tuesday, February 19, 2019
Published in: CODE Magazine: 2009 - July/August
As a developer, it is no surprise to encounter unexpected behavior when working with a new technology.Microsoft added the Entity Framework (EF) to ADO.NET with the .NET 3.5 Service Pack 1 released in 2008 enabling developers to incorporate a data model directly in their application and interact with their data through the model rather than working directly against the database. For background on EF, see my previous article, “Introducing ADO.NET Entity Framework” in the Nov/Dec 2007 issue of CODE Magazine.
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Data Access Options in Visual Studio 2008
By:
Last updated: Tuesday, February 19, 2019
Published in: CODE Magazine: 2008 - September/October
With Visual Studio 2008 and .NET 3.5, developer’s data access options have increased substantially. In addition to using ADO.NET to create DataReaders or DataSets, Microsoft has added LINQ to SQL and Entity Framework as well as ADO.NET Data Services, which leverages those two. In addition to these new options, there are new syntaxes to learn. LINQ, which is built into Visual Basic and C#, has one implementation for LINQ to SQL and another for LINQ to Entities. In Entity Framework, you have the option to use LINQ to Entities as well as two other ways of querying with Entity SQL, as you can see in Figure 1.
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Heard on .NET Rocks! Pablo Castro on Astoria
By:
Franklin, Carl
Last updated: Wednesday, February 20, 2019
Published in: CODE Magazine: 2008 - March/April
Mar/April 2008 .NET Rocks by Carl Franklin
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An Entity Data Model for Relational Data Part I: Defining the Entity Data Model
By:
Pizzo, Michael
Last updated: Wednesday, February 20, 2019
Published in: CODE Focus Magazine: 2007 - Vol. 4 - Issue 3 - Data Programability
Microsoft’s Entity Data Model allows you to define an application-oriented view of your data consistent with how you reason about that data.Part I of this article describes the Entity Data Model and how it enables you to represent real-world concepts in a way that makes relationships between related pieces of data more explicit and easier to query, navigate, and consume than through the traditional relational database model. Part II of the article discusses how Microsoft’s ADO.NET Entity Framework provides a flexible mapping of an application-oriented conceptual schema in terms of the Entity Data Model to existing relational database schemas. Shyam Pather’s article, “Programming Against the ADO.NET Entity Framework” completes the picture by describing the actual programming model and API exposed by the framework.
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An Entity Data Model for Relational Data Part II: Mapping an Entity Data Model to a Relational Store
By:
Last updated: Saturday, January 18, 2020
Published in: CODE Focus Magazine: 2007 - Vol. 4 - Issue 3 - Data Programability
The ADO.NET Entity Framework allows you to define an application-oriented view of your data consistent with how you reason about that data, and map that conceptual view to existing relational schemas.Part I of this article described the Entity Data Model and how it enables you to model real-world concepts in a more natural way. Part II of the article describes how that Entity Data Model is used within the ADO.NET Entity Framework to define an application-oriented conceptual view of your data, and how that view can be flexibly mapped to existing relational schemas. Shyam Pather’s article, “Programming Against the ADO.NET Entity Framework” completes the picture by describing the actual programming model and API used by developers to work with data using the ADO.NET Entity Framework.
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Programming Against the ADO.NET Entity Framework
By:
Pather, Shyam
Last updated: Wednesday, February 20, 2019
Published in: CODE Focus Magazine: 2007 - Vol. 4 - Issue 3 - Data Programability
The ADO.NET Entity Framework raises the level of abstraction at which developers work with data.Rather than coding against rows and columns, the ADO.NET Entity Framework allows you to define a higher-level Entity Data Model over your relational data, and then program in terms of this model. You get to deal with your data in the shapes that make sense for your application and those shapes are expressed in a richer vocabulary that include concepts like inheritance, complex types, and explicit relationships.The ADO.NET Entity Framework raises the level of abstraction at which developers work with data.Rather than coding against rows and columns, the ADO.NET Entity Framework allows you to define a higher-level Entity Data Model over your relational data, and then program in terms of this model. You get to deal with your data in the shapes that make sense for your application and those shapes are expressed in a richer vocabulary that include concepts like inheritance, complex types, and explicit relationships.
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Introducing ADO.NET Entity Framework
By:
Last updated: Tuesday, February 19, 2019
Published in: CODE Magazine: 2007 - November/December
The challenge of bringing data from efficient storage engines such as SQL Server into object-oriented programming models is hardly a new one. Most developers address this challenge by writing complex data access code to move data between their applications and the database. This requires an understanding of the database so that you can access data either from the raw tables, from views, or from stored procedures.</b>
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