creating a model using entity framework database first

... 14 // 15 InitializeComponent(); 16 17 // call the Fill() method of sqlDataAdapter1 18 // to populate dataSet11 with a DataTable named 19 // Customers 20 sqlDataAdapter1.Fill(dataSet11, "Customers"); ... data stored in dataView1 to dataGrid1 and allows dataGrid1 to access any data stored in dataView1 Figure 13.2: Setting the Properties of dataGrid1 Select View ➣ Code and set the Form1() ... "Customers"); 21 } Compile and run your form by pressing Ctrl+F5 Figure 13.3 shows the running form Notice that the information in the form comes from the DataView you created Figure 13.3: The running...

Ngày tải lên: 20/08/2013, 16:48

... within a standard The standard associated with certifications is an American National Standard and an ISO/IEC Standard 17024 It addresses the requirements of a certification program that looks at ... perhaps the best illustration of the sort of broad-based, voluntary national standards organization that could serve as a model for creating a competency-based framework for noncredit occupational ... organizations and, since 2009, educational certificate programs based on American National Standards or ISO International Standards To date, ANSI has accredited 30 certification bodies, and is...

Ngày tải lên: 16/02/2014, 03:20

... Database Initialization Completely Database Initializers Included in Entity Framework Creating a Custom Database Initializer Setting Database Initializers from a Configuration File Using Database ... backing the ‘BreakAwayContext’ context has changed since the database was created Either manually delete/update the database, or call Database. SetInitializer with an IDatabaseInitializer instance ... namespace DataLayerForAnnotations, its database will be DataLayerForAnnotations.BreakAwayContext If the other uses DataLayerForFluent, its database name will be DataLayerForFluent.BreakAwayContext...

Ngày tải lên: 23/03/2014, 02:20

... spectrum, many parliaments lack a strategic plan, an adequate ICT infrastructure, basic tools for Members of Parliament and staff, systems for managing documents and trained ICT staff The status of ... e-parliament, as a transitional stage towards edemocracy, is made with respect to the parliaments or chambers of the Czech Republic, India, Kenya and South Africa The outcome of this analysis has ... knowledgeable § Master – highly expert in many areas, broadly knowledgeable § Grand master – world-class expert in all areas of domain 38 Becerra-Fernandez at al 2004 Knowledge Management: Challenges,...

Ngày tải lên: 10/05/2014, 16:26

... database from the conceptual model and you got it! 26 CHAPTER ■ THE ENTITY DATA MODEL Generating a Schema and Database Figure 2-15 shows how you can continue on and generate a schema and database ... significant improvements have been made Along with creating an EDM from an existing database schema (called database- first) , you can now also the following: • Model- first: Allows you to start with an ... with a SQL Server database The great thing about the Entity Framework is that it is database- , or data source–, independent, in that you can create custom providers to access other databases...

Ngày tải lên: 18/06/2014, 17:20

... Initializers Another way to have Entity Framework create the database for us is to use what is called a database initializer This is a class that implements IDatabaseInitializer, which can be associated ... drop and create the database always, beware! DropCreateDatabaseIfModelChanges: if the model stored in the database does not match the current context’s, the database will be dropped and ... something that you can do, provided the entities are generated as partial classes The MetadataTypeAttribute allows us to have a class that contains the metadata— including, in this case, mapping attributes—for...

Ngày tải lên: 12/07/2014, 17:15

... V $DATABASE • Database guard level is set to ALL by broker automatically on the logical standby database • Database guard level applies to all users except SYS 7-5 Copyright © 2006, Oracle All ... reserved Preparing to Create a Logical Standby Database Perform the following steps on the primary database before creating a logical standby database: Check for unsupported data types Be aware of ... Database with Enterprise Manager Click “Add Standby Database. ” - 17 Copyright © 2006, Oracle All rights reserved Using the Add Standby Database Wizard Select “Create a new logical standby database. ”...

Ngày tải lên: 09/12/2013, 16:15

... basic database application uses a dataset to access information from the database In dbExpress applications, you use a unidirectional dataset A unidirectional dataset reads data from the database ... development and maintenance of actual database applications Database applications include three main parts: the user interface, a set of data access components, and the database itself In this tutorial, ... a database and build a user interface You’ll display the database in a grid and add a few commands and a navigation bar Creating the grid and navigation bar To create the interface for the application:...

Ngày tải lên: 16/04/2014, 11:13

... You can also write a Seed method that the Entity Framework automatically calls after creating the database in order to populate it with test data The default behavior is to create a database only ... folder Because you're using the DropCreateDatabaseIfModelChanges initializer, you could now make a change to the Student class, run the application again, and the database would automatically be ... the Database Context The main class that coordinates Entity Framework functionality for a given data model is the database context class You create this class by deriving from the System.Data .Entity. DbContext...

Ngày tải lên: 20/10/2014, 14:10

... relational model The Hierarchical Model The idea in hierarchical models is that all data is arranged in a hierarchical fashion (a. k .a a parent–child relationship) If, for example, we had a database ... software life cycle for database modeling A database is a collection of related data The concept of related data means that a database stores information about one enterprise — a business, an organization, ... relational databases Most databases in use today are relational, and the focus in this book will be to design a relational database Before we can actually get into relational databases, we introduce...

Ngày tải lên: 22/10/2013, 10:15

... for a password, enter class If “class” does not work, ask the instructor for assistance Router>enable At the privileged EXEC mode, enter the command erase startup-config Router#erase startup-config ... type of router as well as how many interfaces the router has There is no way to effectively list all of the combinations of configurations for each router class What is provided are the identifiers ... ISDN BRI interface The string in parenthesis is the legal abbreviation that can be used in IOS command to represent the interface 4-4 CCNA 2: Routers and Routing Basics v 3.0 - Lab 4.1.4 Copyright...

Ngày tải lên: 04/11/2013, 16:15

... actions that define the relationship between each pair of entities, and label the line with the relationship verb This is the initial ER diagram for the logical data model Answer in v04_160 9a_ act42-1.bmp ... cardinality and existence characteristics of each of the relationships defined in Exercise ! Identify cardinality For each relationship on your ER diagram, ask the question “How many of the parent ... v04_160 9a_ act42-1.bmp Activity 4.2: Creating a Logical Data Model Exercise 2: Determining Cardinality and Existence In this exercise, you will use the syntax discussed in the module to identify the cardinality...

Ngày tải lên: 21/12/2013, 06:16

... Access database " + fileName + " created.", "Create Access Database" , MessageBoxButtons.OK, MessageBoxIcon.Information); } catch (System.Exception ex) { MessageBox.Show("Could not create database ... @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName + ";"; // Use ADOX to create the Access database ADOX.Catalog cat = new ADOX.Catalog( ); try { cat.Create(connectString); } finally { cat = null; } } Discussion ADO ... the objects in a database You can use ADOX from NET through COM interop to create a new Microsoft Access database Use the Create( ) method of the ADOX.Catalog object, passing a connection string...

Ngày tải lên: 24/12/2013, 05:15

... CustomerID, CompanyName, and ContactName columns using Query Builder, as shown in Figure 8.3 Figure 8.3: Adding the CustomerID, CompanyName, and ContactName columns to the query using Query Builder ... CompanyName, and ContactName columns from the Customers table You'll construct this SELECT statement using Query Builder To get started, click the ellipsis button to the right of the CommandText ... continue The CommandText property of your SqlCommand object is then set to the SELECT statement you created in Query Builder Note Save your MyDataReader project by selecting File ➣ Save All You'll...

Ngày tải lên: 21/01/2014, 07:20

... security reasons, not enable the Allow Saving Password check box If you did, your password would be stored in the actual code, and anyone could get your password from the code Leave Allow Saving Password ... the SQL Server Northwind database is set to data source=localhost;initial catalog=Northwind;persist security info=False; user id=sa;pwd=sa;workstation id=JMPRICE-DT1;packet size=4096 Note The ... Entering the advanced connection details You can also click the All tab to view and edit all the values for the connection, as shown in Figure 7.5 To edit a value, you click Edit Value Figure...

Ngày tải lên: 21/01/2014, 07:20

... This link allows you to re-enter the Wizard to configure your DataAdapter Generate Dataset This link allows you to generate a DataSet object using the information set for your DataAdapter You'll ... UPDATE, and DELETE statements along with the table mappings Figure 10.12 shows the final dialog box for the Data Adapter Configuration Wizard Figure 10.12: Final dialog box for the Data Adapter ... for the sqlDataAdapter1 object When you're ready, select File ➣ Save All Note Don't bother running your project yet because you'll add a DataSet that will be populated using your DataAdapter in...

Ngày tải lên: 21/01/2014, 07:20

... sqlDataAdapter1.Fill(dataSet11, "Products"); sqlConnection1.Close(); System.Data.DataTable myDataTable = dataSet11.Tables["Products"]; foreach (System.Data.DataRow myDataRow in myDataTable.Rows) ... DataSet object in the tray Your next step is to set the Form1_Load() method of your form as follows: private void Form1_Load(object sender, System.EventArgs e) { sqlConnection1.Open(); sqlDataAdapter1.Fill(dataSet11, ... myDataTable.Rows) { listView1.Items.Add(myDataRow["ProductID"].ToString()); listView1.Items.Add(myDataRow["ProductName"].ToString()); listView1.Items.Add(myDataRow["UnitPrice"].ToString()); } }...

Ngày tải lên: 21/01/2014, 07:20

... example, if you wanted to access a database, you would open the database connection in the Page_Load() method The OnInit() and InitializeComponent() methods are placed within #region and #endregion ... AutoEventWireUp attribute indicates whether the ASP.NET framework automatically calls the Page_Init() and Page_Load() event handler methods These methods are defined in the WebForm1.aspx.cs; you'll learn ... the Page_Load event is raised The Page_Load event is raised whenever the Web form is loaded by a browser Typically, you'll place any initialization code in the Page_Load() method For example,...

Ngày tải lên: 21/01/2014, 07:20