... Customers table using the Server Explorer You can enter SQL statements by clicking the Show SQL Pane button in the toolbar, as shown in Figure 3.28. Figure 3.28: Entering a SQL statement ... You've only scratched the surface of the Server Explorer in this section. If you have VS .NET, you should feel free to experiment with the Server Explorer-that's the best way to learn. ... you've connected to the database, you can view things such as the tables. You can also retrieve and modify rows in the tables. You can drill down to the tables in the database by clicking the...
... string to the constructor SqlConnection mySqlConnection = Using a SqlConnection Object to Connect to a SQLServerDatabase You create a SqlConnection object using the SqlConnection() constructor. ... illustrates how to use a SqlConnection object to connect to a SQLServerdatabase */ using System; using System.Data; using System.Data.SqlClient; class MySqlConnection { public ... System.Data.SqlClient namespace, you can create a new SqlConnection object using the following statement: SqlConnection mySqlConnection = new SqlConnection(); You can then set the details for the database...
... StateChange event of the mySqlConnection object: // open mySqlConnection mySqlConnection.Open(); // create a SqlCommand object SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); ... SqlConnection object SqlConnection mySqlConnection = new SqlConnection(" ;server= localhost ;database= Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() ... Console.WriteLine("Calling mySqlConnection.Open()"); mySqlConnection.Open(); // close mySqlConnection, causing the State to change from Open // to Closed Console.WriteLine("Calling mySqlConnection.Close()");...
... (left blank / database is created via the opn_mysql .sql script) How to create a Microsoft SQLServerdatabase for the OPN System™ XT Server? 2 2. Open the opn_mssql .sql file in a ... file Microsoft SQLServer opn_mssql .sql My SQL opn_mysql .sql Oracle opn_oracle .sql How to create a Microsoft SQLServerdatabase for the OPN System™ XT Server? 4 The Query ... selections. How to create a Microsoft SQLServerdatabase for the OPN System™ XT Server? 3 Step 3: Run the opn_mssql .sql on Microsoft SQLServer 1. Start Aqua Data Studio, and connect...
... Dim oSQLSvr As New SQLDMO.SQLServer() Dim strAttachMsg As String Try oSQLSvr.LoginSecure = True oSQLSvr.Connect(Me.lstSQLServers.SelectedItem) ' Attach the database ... btnDetach.Click Dim oSQLSvr As New SQLDMO.SQLServer() Dim strDetachMsg As String Try ' Connect to the server oSQLSvr.LoginSecure = True oSQLSvr.Connect(Me.lstSQLServers.SelectedItem) ... the server, this code calls the AttachDBWithSingleFile method. Then it refreshes the database list using the routine GetSQLDatabases. Listing 7.30 frmHowTo7_5.vb: Attaching a SQLServer Database...
... a SQLServer Database Tác giả: Vovisoft.comCấu Trúc Của SQL Server Như đã trình bày ở các bài trước một trong những đặc điểm của SQLServer 2000 là Multiple-Instance nên khi nói đến một (SQL) ... (SQL) Server nào đó là ta nói đến một Instance của SQLServer 2000, thông thường đó là Default Instance. Một Instance của SQLServer 2000 có 4 system databases và một hay nhiều user database. ... động lại SQL Server hay khi ta disconnect. • Model : Database này đóng vai trò như một bảng kẻm (template) cho các database khác. Nghĩa là khi một user database được tạo ra thì SQLServer sẽ...
... Implement a SQLServerDatabase 3.1. Cấu Trúc Của SQL Server Như đã trình bày ở các bài trước một trong những đặc điểm của SQLServer 2000 làMultiple-Instance nên khi nói đến một (SQL) Server nào ... đến một Instance của SQL Server 2000, thông thường đó là Default Instance. Một Instance của SQLServer 2000có 4 system databases và một hay nhiều user database. Các system databases bao gồm:• ... Msdb : Database này được SQLServer Agent sử dụng để hoạch định các báo động và các công việc cần làm (schedule alerts and jobs). 3.2. Cấu Trúc Vật Lý Của Một SQLServer Database Mỗi một database...
... conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder ... 6.14 Specifying Locking Hints in a SQLServerDatabase Problem You need to pessimistically lock rows in an underlying SQLServer database. Solution Use SQLServer locking hints from ADO.NET. ... 6-39. File: UsingLockingHintsForPessimisticLockingForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Data; using System.Data.SqlClient;...
... conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder ... to monitor lock activity. For more information about database locks, using locking hints, or monitoring database locks, see Microsoft SQLServer Books Online. [ Team LiB ] SERIALIZABLE Use ... internally by the lock manager. • The SQLServer Profiler can be used to monitor and record locking information. • The Windows Performance Monitor has a SQLServer Locks Object counter that can...
... Creating a Command Object UsingVisualStudio .NET To create a SqlCommand object usingVisualStudio .NET (VS .NET), you drag a SqlCommand object from the Data tab of the Toolbox ... SqlConnection object using VS .NET). This object will have the default name of sqlConnection1. 3. Configure your sqlConnection1 object to access your Northwind database. Drag a SqlCommand object ... with a SqlCommand object. This object is assigned the default name of sqlCommand1. Figure 8.1: A SqlCommand object in a form You then set the Connection property for your sqlCommand1 using...
... Creating a Connection Object UsingVisualStudio .NET To create a SqlConnection object usingVisualStudio .NET, you drag a SqlConnection object from the Data tab of the Toolbox ... with a SqlConnection object. This object is assigned the default name of sqlConnection1. Figure 7.1: Creating a SqlConnection object with VisualStudio .NET Once you've created a SqlConnection ... You'll recall that a SqlConnection object allows you to connect to a SQLServer database. You can also drag an OleDbConnection object from the Toolbox to your form to connect to a database that supports...