This topic describes how to define the business model and the business logic for WinForms and ASP.NET applications. The applications' business model contains two logical parts that are implemented via different ORM tools: 本主题描述如何定义WinForms和ASP.net的业务…

HBase Data Model--HBase 数据模型(翻译) 在HBase中,数据是存储在有行有列的表格中.这是与关系型数据库重复的术语,并不是有用的类比.相反,HBase可以被认为是一个多维度的映射. HBase数据模型术语 Table(表格) 一个HBase表格由多行组成. Row(行) HBase中的行里面包含一个key和一个或者多个包含值的列.行按照行的key字母顺序存储在表格中.因为这个原因,行的key的设计就显得非常重要.数据的存储目标是相近的数据存储到一起.一个常用的行的key…

How to: Create a Business Model in the XPO Data Model Designer This topic provides step-by-step instructions on how to use the XPO Data Model Designer in XAF applications. We will create a simple business model consisting of two objects - Employee an…

After you have introduced a data model, you may need to have the application populate the database with a predefined set of objects. In this topic, you will learn how to add data to the database in code when the application runs. For this purpose, th…

A Model represents some object that your application manages. For example, one might define a Model for Users, Products, Cars, or any other real-world object that we want to model in the system. Models are registered via the model manager, and are us…

1. 新建一个项目,添加一个ADO.NET Entity Data Model的文件,此文件会生成所有的数据对象模型,如果是用vs2012生的话,在.Designer.cs里会出现“// Default code generation is disabled for model 'C:\Work\Project\20140303\Delete\Model1.edmx'. // To enable default code generation, change the value of the '…

http://www.entityframeworktutorial.net/EntityFramework5/create-dbcontext-in-entity-framework5.aspx 官网的教程https://msdn.microsoft.com/en-us/data/jj206878 Here, we are going to create an Entity Data Model (EDM) for SchoolDB database and understand the ba…

Using a Proxy Ext.define('User', { extend: 'Ext.data.Model', fields: ['id', 'name', 'email'], proxy: { type: 'rest', url : '/users' } }); 当在Model中定义了一个Proxy以后就可以使用 save,update,load,destroy这4个方法 进行增删改查操作 var user = Ext.create('User', {name: 'Ed Spence…

Model代表应用程序管理的一些对象.例如,我们可能会为 我们想在系统中建模的现实世界中的一些物体像使用者.产品和汽车等定义一个Model.这些Model在 Ext.ModelManager中注册,被Ext.data.Store使用, 而这些Ext.data.Store又被许多 Ext中许多与数据绑定的组件使用. 直接上代码: <%-- Created by IntelliJ IDEA. User: Administrator Date: 2015/12/13 0013 Time: 08:51…

本文转自:http://www.asp.net/mvc/overview/older-versions/getting-started-with-ef-5-using-mvc-4/creating-an-entity-framework-data-model-for-an-asp-net-mvc-application Creating an Entity Framework Data Model for an ASP.NET MVC Application (1 of 10)   By    …