config.SetServiceOperationAccessRule("MyServiceOperation", ServiceOperationRights.All) config.SetEntitySetAccessRule("MyEntityset", EntitySetRights.AllRead) TODO: set rules to indicate which entity sets and service operations are visible, updatable, etc. Public static void InitializeService(IDataServiceConfiguration config) This method is called only once to initialize service-wide policies. Visual Studio will generate the following code for the code behind the Web Service. To start, I "Add New Item" and select "WCF Data Service" I don't know what is easier: generating an ADO.NET Entity Data Model or exposing an entire ADO.NET Entity Data Model as a Web Service. The first thing I want to do is expose the data through a Web Service so we can work with the model on the client-side. Now that we have a fairly complete object model, I want to extend it to make it more usable. As you can see, it is quite substantial and would take a long time to develop manually! Thank you ADO.NET Entity Framework for making my life easier. Below is the model we generated in minutes. This dialog allows you to drill down to specific data objects in case you want to explicitly include or exclude objects (like a legacy Table).Ĭlick finish and BOOM, we have a full object model to work with including methods for Updates, Inserts and Deletes. I am choosing all since I want to be able to work with Tables, Views and Stored Procedures included in the database. Next I will select which object in the database we want to add to the entity model. I only chose this option because we will be making this application available for download and I did not want to require you all to install a separate instance of AdventureWorks on a SQL Server. For highly normalized databases it is sometimes better to start with an empty model and add model views that merge tables to build useful objects.įor this application I have embedded the database inside the App_Data folder so we will choose to generate our model from the MDF file itself. We are choosing this option since the database is already well-structured and matches the model we want to work with. Next we will choose to "Generate from database". Let's look at how we can easily generate a Entity Framework model from an existing database.įirst we need to "Add New Item" to the project and select "ADO.NET Entity Data Model". AdventureWorks is well-structured so I figured Visual Studio would do a good job of auto-generating the model from the database schema. I chose to use Entity Framework to generate a model for me. Since AdventureWorks is a large and fairly complex database, I did not want to write an entire business model for it. Here is a great diagram depicting the whole database model and its entities.Ĭheck out the complete data model: AdventureWorks2008.pdf Building the Model The entire data model is well-documented and can be seen on this AdventureWorks Data Dictionary.aspx) and this SQL Server Objects in AdventureWorks.aspx). And if you are really old school then you should check out this AdventureWorks to pubs Table Comparison.aspx). If you are a hardcore Northwind fanboy then you might enjoy this AdventureWorks to Northwind Table Comparison.aspx). Luckily, they published some helpful articles that map AdventureWorks to the older and flatter sample databases. For this reason, the database might be someone cumbersome to those of you used to more flattened samples from Microsoft. The AdventureWorks data model is relational and uses alot of good practices in doing so. The database schema is designed to showcase SQL Server features. AdventureWorks is used in code examples in SQL Server Books Online and in companion samples that can be downloaded from the Microsoft SQL Server Samples and Community Projects home page. Scenarios include Manufacturing, Sales, Purchasing, Product Management, Contact Management, and Human Resources. The AdventureWorks OLTP database supports standard online transaction processing scenarios for a fictitious bicycle manufacturer (Adventure Works Cycles). The purpose of this goal is that developers can plug this app into the AdventureWorks database they might already have installed. We also made sure not to build anything that required changes to the database schema or data in order to work. A full scale database with real world data.If you haven't already figured it out, we are going to use the AdventureWorks 2008 sample database from codeplex to build against. Epic AdventureWorks Part 3 - The Web AppĬheck out the AdventureWorks ASP.NET Sample ASP.NET app online.Epic AdventureWorks Part 1 - The Blueprints.This article is the second of a four part series:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |