connecting to a database using php

... result.ToString( ); } Discussion A Microsoft Access database password requires that users enter a password to obtain access to the database and database objects. This is also known as share-level ... those defined by ADO.NET. To open a database secured by a Microsoft Access database password, use the Jet OLEDB :Database Password attribute in the connection string to specify the password. This ... security. A password does not allow groups or users to have distinct levels of access or permissions. Anyone with the password has unrestricted access to the database. The Set Database command from...

Ngày tải lên: 24/12/2013, 05:15

... Team LiB ] [ Team LiB ] Recipe 1.4 Connecting to a Secured Access Database Problem You want to connect to a Microsoft Access database that has been secured with user-level security and ... The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to a Microsoft Access database secured with user- level security and a workgroup file using ... defined by ADO.NET. To open a database secured by Microsoft Access user-level security, use the Jet OLEDB:System Database attribute in the connection string to specify the path and filename of...

Ngày tải lên: 24/12/2013, 05:15

Ngày tải lên: 20/08/2013, 15:08

... free to experiment with the Server Explorer-that's the best way to learn. Once you've connected to the database, you can view things such as the tables. You can also retrieve and ... clicking the Show Diagram button in the toolbar and selecting columns from the table, as shown in Figure 3.29 . As you can see, I've selected the ContactName, CompanyName, and CustomerID columns ... tables. You can drill down to the tables in the database by clicking the Add icon in the tree in Server Explorer, and you can retrieve the rows from a table by clicking the right mouse button...

Ngày tải lên: 14/12/2013, 13:15

... Create a SQL SELECT statement referencing a worksheet or a range in an Excel workbook and execute the statement to fill a DataSet using a DataAdapter or to create a DataReader. For example: ... INSERT INTO [MySheet$] (Field1, Field2, Field3) VALUES ('testdata', 1.234, '09/28/1979'); Retrieve data Use either a DataAdapter or a DataReader to retrieve data from an Excel ... 1-2 . Example 1-2. File: ExcelForm.cs // Namespaces, Variables, and Constants using System; using System.Configuration; using System.Data; private OleDbDataAdapter da; private DataTable...

Ngày tải lên: 14/12/2013, 18:16

... ConfigurationSettings.AppSettings["Sql_Msde_ConnectString"]); Manager and Query Analyzer are also shared. The System.Data.SqlClient class cannot automatically discover the port number of a named instance of SQL Server listening on a port other than ... need to understand what a SQL Server or MSDE named instance is and how to connect to one. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to ... [ Team LiB ] Recipe 1.7 Connecting to a Named Instance of SQL Server or Microsoft Data Engine (MSDE) Problem You want to connect to a named instance of a SQL Server or Microsoft Data Engine...

Ngày tải lên: 14/12/2013, 18:16

... act as a data cache in applications. You can modify the data in the DataSet, and later reopen the connection and send the changes back to the database. You can manually open a connection to a ... empty. Updating a Database Using a DataSet In the exercises so far in this chapter, you have seen how to fetch data from a database. Now it's time to show you how to update data. First, ... the data is valid. After all, you don't want to waste a round-trip over the network to the database and all those database resources if the operation is going to fail. Validate the changes...

Ngày tải lên: 15/12/2013, 00:15

... provider can read records from and insert records into a text file data source. The Jet database engine can access other database file formats through Indexed Sequential Access Method (ISAM) drivers ... Namespaces, variables, and constants using System; using System.Configuration; using System.Windows.Forms; using System.Data; using System.Data.OleDb; // . . . // Create the data adapter ... data adapter to retrieve all rows from text file. The MaxScanRows option indicates how many rows should be scanned to automatically determine column type. A value of 0 indicates that all rows...

Ngày tải lên: 24/12/2013, 05:15

... so that their credentials are available to IIS. The following areas of the application need to be configured: • Configure the ASP.NET application so that Integrated Windows Authentication ... enabled and Anonymous Access is disabled. • The web.config file establishes the authentication mode that the application uses and that the application will run as or impersonate the user. Add ... Connect to SQL Server from ASP.NET using Windows Authentication in SQL Server. Discussion Connecting to a SQL Server database provides two different authentication modes: Windows Authentication...

Ngày tải lên: 24/12/2013, 05:15

... demonstrates how to store XML data in a text field of a database table and subsequently read it into an XmlDocument using the LoadXml( ) method. Standard database access techniques using a DataAdapter ... sender, System.EventArgs e) { DataSet ds = new DataSet( ); // Fill the Categories table and add it to the DataSet. SqlDataAdapter da = new SqlDataAdapter("SELECT TOP 3 * FROM Orders", ... System.Configuration; using System.Windows.Forms; using System.IO; using System.Xml; using System.Data; using System.Data.SqlClient; private DataTable dt; private SqlDataAdapter da; private...

Ngày tải lên: 24/12/2013, 05:15

... Team LiB ] Recipe 10.8 Adding Tables to a Database Problem You need to add a table to an existing database. Solution Use the CREATE TABLE statement. The sample code executes the DDL statement using ... statement using the ExecuteNonQuery( ) method o f the Command object to add a table to an existing SQL Server database. The C# code is shown in Example 10-8 . Example 10-8. File: AddTableToDatabaseForm.cs ... File: AddTableToDatabaseForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Data; using System.Data.SqlClient; // . . . SqlConnection...

Ngày tải lên: 21/01/2014, 11:20

Ngày tải lên: 25/01/2014, 05:20

... Server and a DataSet object. You'll learn the details on how to pull rows from the database into a DataSet in Chapter 10 , and how to push changes made in a DataSet to the database in Chapter ... property, as shown in Figure 6.11 . Using a DataGrid Control to Access a Database In this section, you'll learn how to use a DataGrid control to access the rows in a database table. Follow ... you'll add a SqlConnection object and a SqlDataAdapter object to your form. Note You use a SqlConnection object to connect to a SQL Server database, and a SqlDataAdapter object to move rows...

Ngày tải lên: 07/11/2013, 10:15

... ADO.NET automatically stores database connections in a pool. Connection pooling offers a great performance improvement because you don't have to wait for a brand new connection to the database ... illustrates how to use a SqlConnection object to connect to a SQL Server database */ using System; using System.Data; using System.Data.SqlClient; class MySqlConnection { public static ... database to be established when there's a suitable connection already available. When you close a connection, that connection isn't actually closed; instead, your connection is marked as...

Ngày tải lên: 07/11/2013, 10:15

... class. The following example defines a method named StateChangeHandler to handle the StateChange event. You'll notice that the second parameter to this method is a StateChangeEventArgs ... System; using System.Data; using System.Data.SqlClient; class StateChange { // define the StateChangeHandler() method to handle the // StateChange event public static void StateChangeHandler( ... request to the database; two examples of states are open and closed. You use the Connection object's State property to get the current state of the connection to the database. The State property...

Ngày tải lên: 14/12/2013, 13:15

Ngày tải lên: 21/01/2014, 11:20

Ngày tải lên: 05/06/2014, 23:04

Ngày tải lên: 20/08/2013, 15:35

... configuration file named TNSNAMES.ORA to locate the Oracle database and determine how to connect to it based on the Data Source or Database attribute in the connection string. An example of an entry ... Oracle Button.Click Creates and opens a connection to an Oracle database using the Oracle .NET data provider. Information about the database is displayed from the properties of the OracleConnection ... to an Oracle database. Solution You can connect to an Oracle database using either the Oracle .NET data provider or the OLE DB .NET data provider. The sample code contains two event handlers:...

Ngày tải lên: 24/12/2013, 05:15

... Example of EPR Creation How to Build a Service Using GT4 Globus Alliance Staff Rachana Ananthakrishnan, Charles Bacon, Lisa Childers, Jarek Gawor, Joe Insley, Argonne National Laboratory Ben Clifford, ... Started: Deploy a Service  2. State Management Part I: Create Resources  3. Lifetime Management Part I: Destroy Resources  4. State Management Part II: Add a Resource Property  5. Aggregating ... service create-note Create EPR1 A Runtime Example of EPR Creation April 2005 How to Build a Service Using GT4 14 What Attendees Should Do  Install GT4 and tutorial code  Start the GT4 container ...

Ngày tải lên: 07/01/2014, 01:19