Entity Framework Design
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Enums in the Entity Designer
One of the most highly-requested features for the Entity Framework is first-class support for Enums, and we are happy to provide support for this feature in the Entity Designer in the June 2011 CTP recently released. If you haven’t checked it out already, find the bits here: http://www.microsoft...
12 Aug 2011
Enumeration Support in Entity Framework
We recently shipped Entity Framework 4.1 , and it has been exciting to see the reception the new Code First and DbContext APIs have been getting in the developer community. What is also exciting is to be able to start talking more about other features we have been working on, like table-valued functions...
29 Jun 2011
Spatial Types in the Entity Designer
One of the highly-anticipated features coming in the next version of Entity Framework is Spatial support. We’d like to give you a look at the experience of developing with Spatial types in the Entity Designer. If you haven’t already, take a look at what is going on under the hood with Spatial...
12 May 2011
Unique Constraints in the Entity Framework
Update: this feature has been postponed and will not be included in Entity Framework 5. Unique Constraints in the Entity Framework We’ve been busy working on enabling unique constraints in the Entity Framework. Unique Constraints allow you to model candidate keys (also known as alternate...
9 Mar 2011
Table-Valued Function Support
One of the key features coming in the next release of Entity Framework is Table-Valued Function support. It is a very popular customer request and we have been working diligently to design a solution that we hope you find simple, yet useful. This design intends to make TVFs first-class citizens on Entity...
21 Jan 2011
Foreign Keys in the Entity Framework
Background A number of months ago we asked whether Foreign Keys (FKs) in Conceptual and Object models were important. The feedback we got indicated that there are a real mix of opinions on the topic. Some people are all for them while others think that FKs pollute the conceptual model. The fact...
16 Mar 2009
Update on Computed Properties
A while back I wrote a post that introduced the concept of Computed Properties . Since that time we’ve had a number of conversations with both customers and internal partners and we’ve had some new ideas, that have changed our thinking somewhat. First off we decided to implement Model Defined Functions...
12 Jan 2009
Model Defined Functions
Today the Entity Framework, and more specifically the Entity Data Model, have a limited notion of Functions. We are currently restricted to Function Imports that allow stored procedures to be invoked, and Canonical / Store Functions for database independent and database specific functions respectively...
7 Jan 2009
Structural Annotations - One Pager
In V1 of the Entity Framework it is possible to annotate a schema using attributes declared in another XSD. However XML attributes are a very limited form of annotation. It would be better if we could annotate using full elements. This is what we are calling Structural Annotations. This feature...
12 Aug 2008
Using Stored Procedures to load structured data.
V1 of the Entity Framework allows you to use stored procedures in two main ways: Mapping Create, Update and Delete entity operations to appropriate stored procedures. Doing a FunctionImport that allows you to return an enumeration of Entities* Now the thing is, in order to return an enumeration...
18 Jul 2008
Computed Properties One Pager
UPDATE: this blog post is out of date. Please review this instead. If you've been paying attention to what the Entity Framework team has been saying. You will remember hearing us talk about using the Entity Data Model (EDM) as a common way of describing models that can be understood by many different...
27 Jun 2008
Transparency in the design process
Today marks the first day of engineering for the ADO.NET Entity Framework V2.0. V2 of the product is a combination of a continued investment in our greater data platform vision as well as a focus on new and expanded ORM scenarios. Some of the things that we are trying to do in this release are as follows...
23 Jun 2008
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