entity framework data access layer example

This article mainly introduces the Laravel framework implementation of the model layer of the deletion and modification (curd) operation, combined with the example form analysis of the LARAVEL framework model layer for the database to delete and modify the operation of the s

When implemented using Java objects after SCA module modeling, the data persistence layer using Hibernate and IBATIS to implement SCA module is designed to provide SDO with data access services and accelerate the implementation of SCA modules. The previous article has talked about how to implement the

, EventArgs e) { ProductsTableAdapter productsadapter = new ProductsTableAdapter (); Gridview1.datasource = Productsadapter.getproducts (); Gridview1.databind (); } } Figure 13: Product List displayed in the GridViewThis example requires us to write three lines of code in the Page_Load event handler of the ASP.net Web page. In future tutorials, we'll talk about using ObjectDataSource to get

database. For our shopping cart and product catalog we'll implement a SQL Express database as follows. We will use standard ASP. NET Membership database. The shopping cart and product data will be saved by creating a new database. Having created the database (Commerce. mdf) in the application "s App_Data folder we can proceed to create our Data Access

,Phone FROMSuppliers WHERECountry=@Country GetSupplierBySupplierID SELECTSupplierID,CompanyName,Address, City,Country,Phone FROMSuppliers WHERESupplierID=@SupplierID EmployeesTableAdapter GetEmployees SELECTEmployeeID,LastName,FirstName, Title,HireDate,ReportsTo,Country FROMEmployees GetEmployeesByManager SELECTEmployeeID,LastName,FirstName, Title,HireDate,ReportsTo,Country FROMEmployees WHEREReportsTo=@ManagerID GetEmployeeByEmployeeID

Access | Data below is the schematic diagram of the DAF: Does it look easier? According to the past experience, in this mode of inheritance, the main development work is concentrated on the dafbase and MYDAF, CUSTOMERDAF task relatively easy, data validation or conversion processing is not required in every way J So, DAF since the so-called façade

Previous Article: Application Framework Design II: hierarchical and inter-layer data transfer (I) After reading the previous article, many people commented that it may be of no practical use to give so many nouns. In fact, compared with. net, java has a lot of architectural skills. It will be much superficial if we want to talk about the architecture without talk

0 Nation Stunation String 0 0 Age Stuage Integer 0 0 ClassID Stuclassid Integer 0 0 Required Classes Clssqlhelper: Microsoft's Data Access helper class Clssqlbuilder: Classes that generate the corresponding SQL statements based on the configuration file easy to handle data access

yesterday's article is based on. NET platform's layered architecture Combat (vii)--the first implementation of the data access layer: After the release of Access+sql, many friends have made comments and suggestions to my program, thank you in the first place ... In particular, the Golden Ocean (Jyk) has made a lot of

mismatch). ORM is a technique for transparently persisting an Application object to a table in a relational database. The ORM behaves like a virtual database, hiding the underlying database schema from the user. ORM provides functionality to perform full CRUD operations and encourages object-oriented queries. ORM also supports metadata mapping and helps with application transaction management.An example helps illustrate how ORM works. Consider a simp

Android access Android Wear Data layer Api -- synchronize Data Items Data Items is a Data interface used to synchronize mobile phones and wear. A Date Items usually includes the following parts: Payload In a byte array, you can se

the server-side programs, these programs have a high degree of stability, its development tools such as JBuilder, Eclipse and so on the view layer interface is not very good support (of course, those with Notepad to write the interface of the application except), This makes the design of many MVC frameworks impossible to align. A more friendly framework for MVC, in the simplification of server application

"Tableadpater" sets the wizard window. First, we need to specify the database string to connect to, and save the connection string to the Web. config file, and select"Next" to go to the next step. In this step, select the command type. Because we have just created a stored procedure, select "use existing store procedure", for example: Click "Next" to enter the next window and ask which stored procedure is used, for

Asp.net| Create | access | data Step Fifth: Complete the data access layer Note that the Productstableadapters class returns the values of CategoryID and SupplierID from the Products table, but does not include the Categories table CategoryName Fields and Suppliers table C

Step 5: complete the data access layer Note that the ProductsTableAdapters class returns the values of CategoryID and SupplierID from the Products table, but does not include the CategoryName field of the Categories table and the CompanyName field of the Suppliers table, although when we display product information, these are probably the fields we want to disp

Access | data Øborland ECO The Borland company, renowned for providing "fastest" components, pioneered a new development framework before Microsoft released ObjectSpaces: ECO (Enterprise Core Object), without saying its technical features, On the basis of its seamless integration with modeling tools together, we have to admire Borland's effort in unifying the de

Nhibernate class library online, because the DLL file of Nhibernate must be referenced during the call. You can download it on its official homepage.Http://www.nhibernate.org/.the main core of dllis as follows:Nhibctions. dll, log4net. dll, iesi. Collections. dll, Castle. dynamicproxy. dll 2. Create a database logging and a simple user table. The fields are as follows:Create Table users (Logonid varchar (20) primary key,Name varchar (40 ),Password varchar (20 ),Emailaddress varchar (40 ),Lastlo

Nhibernate class library online, because the DLL file of Nhibernate must be referenced during the call. You can download it on its official homepage.Http://www.nhibernate.org/.the main core of dllis as follows:Nhibctions. dll, log4net. dll, iesi. Collections. dll, Castle. dynamicproxy. dll 2. Create a database logging and a simple user table. The fields are as follows:Create Table users (Logonid varchar (20) primary key,Name varchar (40 ),Password varchar (20 ),Emailaddress varchar (40 ),Lastlo

be modified, you can easily find the corresponding dataset Based on the name, without affecting other test cases. Note: 1. The Element and Its Attribute names must correspond to the database structure one by one, rather than the entity class. 2. If the number of fields to be initialized is different for the same data object initialization, for example, eight fie

In the previous article, we built the entire solution project and built the database to complete the entity classes and nhibernate mapping files. In this article, you will define the data access interface and implement the interface using NHibernate. Use spring.net to configure DAO. and unit Test it. The data