kill connections to a sql database

... reason, 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 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 ... the // database, passing the connection string to the constructor SqlConnection mySqlConnection = Using a SqlConnection Object to Connect to a SQL Server Database You create a SqlConnection...

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 ... enumeration. Note An enumeration is a list of numeric constants, each of which has a name. Table 7.4 lists the constants defined in the ConnectionState enumeration. Table 7.4: ConnectionState ... Closed to Open Calling mySqlConnection.Close() mySqlConnection State has changed from Open to Closed The InfoMessage Event The InfoMessage event fires when the database returns a warning...

Ngày tải lên: 14/12/2013, 13:15

Ngày tải lên: 21/01/2014, 11:20

Ngày tải lên: 21/01/2014, 12:20

Ngày tải lên: 31/03/2014, 16:20

... Kế Một Database Tạo Một User Database Chúng ta có thể tạo một database dễ dàng dùng SQL Server Enterprise bằng cách right-click lên trên " ;database& quot; và chọn "New Database& quot; ... một database object (table, view ) hay một data type. Sp_helpdb [&apos ;database& apos;] Cung cấp thông tin về một database cụ thể nào đó. Sp_monitor Cho biết độ bận rộn c a SQL Server Sp_spaceused ... 2000, thông thường đó là Default Instance. Một Instance c a SQL Server 2000 có 4 system databases và mt hay nhiu user database. Cỏc system databases bao gm: ã Master : Ch a tất cả những thông tin...

Ngày tải lên: 25/08/2012, 09:00

... user database được tạo ra thì SQL Server sẽ copy to n bộ các system objects (tables, stored procedures ) từ Model database sang database mi va to. ã Msdb : Database này được SQL Server Agent ... ta nói đến một Instance c a SQL Server 2000, thông thường đó là Default Instance. Một Instance c a SQL Server 2000 có 4 system databases và một hay nhiều user database. Các system databases bao ... Sp_help ['object'] Cung cấp thông tin về một database object (table, view ) hay một data type. Sp_helpdb [&apos ;database& apos;] Cung cấp thông tin về một database cụ thể nào đó. Sau đó...

Ngày tải lên: 06/10/2013, 17:20

... command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); ... from changing data being read by a user and preventing users from reading data being changed by a user. Locks are acquired and released by user actions; they are managed internally by database ... ReadCommitted. A DataAdapter is used on the transacted connection to fill a DataTable. A CommandBuilder is created to generate updating logic. The default view of the table is bound to the data grid...

Ngày tải lên: 17/10/2013, 20:15

... 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 ... 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

... command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); ... as a transaction with an isolation level of READ COMMITTED. READUNCOMMITTED Same as NOLOCK. REPEATABLEREAD Use the same locking as a transaction with an isolation level of REPEATABLE READ. ... SqlCommandBuilder(da); // Fill table using the DataAdapter. DataTable dt = new DataTable( ); da.Fill(dt); // Bind the default view of the table to the grid. dataGrid.DataSource = dt.DefaultView;...

Ngày tải lên: 14/12/2013, 18:16

... 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 ... database. 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 ... 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: 24/12/2013, 05:15

Ngày tải lên: 21/01/2014, 11:20

Ngày tải lên: 21/01/2014, 12:20

Ngày tải lên: 26/01/2014, 10:20

Ngày tải lên: 26/01/2014, 11:20

Ngày tải lên: 20/02/2014, 18:20

... Between the Strategic Plan and the Operational Plan 213 Analysis of Company Performance 214 Analysis of Competition 215 Analysis of Market and Market Share 216 Analysis of Mission 217 Analysis of ... performance that must be tracked against the business plan. They are organizational, team, and individual. All lead to the strategic goals. Figure 12-4. During the sustaining phase you must pay attention ... is a fantasy tale, there are important messages that we can translate into your business planning. T HE T HREE R EASONS C OMPANY S TORIES F ALL S HORT OF E XPECTATIONS The company story is a...

Ngày tải lên: 21/09/2012, 17:33

... wake at 6 a. m., but nap for two hours or so in the early afternoon. Thus the influence on one's sleep pattern is worthy of consideration when choosing an occupation. ...

Ngày tải lên: 04/10/2012, 10:02