... xmlTextBox.Text = ds.GetXml( ); Discussion SQL Server 2000 introduced support for retrievingdatainXMLformat using the FOR XML clause. The .NET SQLServerdata provider SqlCommand ... used with SQL statements that return XML data, such as those with a FOR XML clause. The ExecuteXmlReader( ) method can also be used to return ntext data containing valid XML. For more information ... an ExecuteXmlReader( ) that allows you to retrieve an XML stream directly fromSQL Server, where it returns an XmlReader that contains the results of the SQL query. The ExecuteXmlReader( )...
... nvarchar(128) Database name [ Team LiB ] Recipe 10.2 RetrievingDatabase Schema Information fromSQLServer Problem You need to retrieve database schema information from a SQLServer database. ... constraint defined on them CONSTRAINT_TABLE_USAGE Tables that have a constraint defined on them DOMAIN_CONSTRAINTS User-defined data types with a rule bound to them DOMAINS All user-defined data ... following syntax: INFORMATION_SCHEMA.TABLES Table 10-1 lists the information schema views available inSQLServer 2000. Table 10-1. Information schema views Name Description CHECK CONSTRAINTS...
... to monitor lock activity. For more information about database locks, using locking hints, or monitoring database locks, see Microsoft SQLServer Books Online. [ Team LiB ] // . . . ... Unbind the table from the grid. dataGrid.DataSource = null; [ Team LiB ] Recipe 6.14 Specifying Locking Hints in a SQLServerDatabase Problem You need to pessimistically lock rows in ... rows in an underlying SQLServer database. Solution Use SQLServer locking hints from ADO.NET. The sample code contains three event handlers: Start Tran Button.Click Creates a SQL SELECT statement...
... BuildCnnStr(ByVal strServer As String, ByVal strDatabase As String) As String 12.4 Retrieve XMLfromSQLServer 2000 Sometimes I have to pull datafrom my SQLServerdatabase into an XML document format. ... hyperlink with the caption How-To 12.4: RetrievingXMLfromSQLServer 2000. When the page loads, you will see an example of a T -SQL statement that retrieves data fromSQLServer 2000 in an XML format. ... read fromSQLServerin an XML format. Comments Normally, you would be taking the XML document that the command object returned and passing that on to another system that requires the data...
... Windows Performance Monitor has a SQLServer Locks Object counter that can be used to monitor lock activity. For more information about database locks, using locking hints, or monitoring database ... get information about database locks: ã The system stored procedure sp_lock returns a result set containing all active locks. ã The syslockinfo table in the master database contains information ... Unbind the table from the grid. dataGrid.DataSource = null; data structures used internally by the lock manager. ã The SQLServer Profiler can be used to monitor and record locking information....
... schema and data. SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings[" ;Sql_ ConnectString"]); DataTable ordersTable = new DataTable(ORDERS_TABLE); ... and constants using System; using System.Configuration; using System.Text; using System .Data; using System .Data. SqlClient; // . . . StringBuilder result = new StringBuilder( ); // ... determine whether it begins with the word DEFAULT indicating a default constraint. For default constraints, the column name is the string following the word column in the constraint_type column. Once...
... một (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 mt hay nhiu user database. ... trong SQLServer ta có các loại Integer như : tinyint, smallint, int, bigint. Trong đó kích thước từng loại tương ứng là 1,2,4,8 bytes. Nghĩa là loại smallint tương đương với Integer và loại int ... (template) cho các database khác. Nghĩa là khi một user database được tạo ra thì SQLServer sẽ copy toàn bộ các system objects (tables, stored procedures ) từ Model database sang database mi va...
... ta nói 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 ... 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 ... trong SQLServer ta có các loại Integer như : tinyint, smallint,int, bigint. Trong đó kích thước từng loại tương ứng là 1,2,4,8 bytes. Nghĩa là loạismallint tương đương với Integer và loại int...
... to a SQLServerdatabase */ using System; using System .Data; using System .Data. SqlClient; class MySqlConnection { public static void Main() { // formulate a string containing the ... follows: mySqlConnection.ConnectionString = server= localhost ;database= Northwind;uid=sa; mySqlConnection.ConnectionTimeout = 15 mySqlConnection .Database = Northwind mySqlConnection.DataSource ... // database connection string connectionString = " ;server= localhost ;database= Northwind;uid=sa;pwd=sa"; // create a SqlConnection object to connect to the // database, passing...
... closed. Connecting The Connection is establishing access to the database. Executing The Connection is running a command. Fetching The Connection is retrieving information from the database. Open ... produce information and error messages using the SQLServer PRINT or RAISERROR statements, which are described in Chapter 4, "Introduction to Transact- SQL Programming." The following InfoMessageHandler() ... 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 or information...
... using System; using System.Configuration; using System.Drawing; using System.Windows.Forms; using System.IO; using System .Data; using System .Data. SqlClient; private const String ... connection. SqlConnection conn = new SqlConnection( ConfigurationSettings.AppSettings[" ;Sql_ ConnectString"]); // Create the command to retrieve the image from the database. String sqlText ... Update the data and image to the database. // Get the ID for the record from the binding manager. int Id = (int)ds.Tables[TABLENAME].Rows[bm.Position]["ID"]; String sqlWrite =...
... defined in the package header. A REF CURSOR is an Oracle data type that points into a result set returned by a query. A REF CURSOR differs from a normal cursor in that while a cursor points ... is shown in Example 2-29. Example 2-29. File: OracleRefCursorsForm.cs // Namespaces, variables, and constants using System; using System.Text; using System .Data; using System .Data. OracleClient; ... // Create the DataAdapter and table mappings. OracleDataAdapter da = new OracleDataAdapter(cmd); da.TableMappings.Add("Table", "ORDERS"); da.TableMappings.Add("Table1",...
... of the MySQL database machine) Port: <3306> (default MySQL port) Database: (left blank / database is created via the opn_mysql .sql script) How to create a Microsoft SQLServerdatabase ... to create a Microsoft SQLServerdatabase for the OPN System™ XT Server? 8 Connecting to MySQL database When you connect to the MySQL database using the Aqua Data Studio, you need ... Microsoft SQLServer database for all database selections. How to create a Microsoft SQLServerdatabase for the OPN System™ XT Server? 3 Step 3: Run the opn_mssql .sql on Microsoft SQL...
... connecting to the server, the DetachDB method is called. Then the GetSQLDatabases routine is called to refresh the database list. Listing 7.27 frmHowTo7_5.vb: Detaching a SQLServerDatabase ... depending on whether a SQLServer and database has been selected. It then calls GetSQLDatabases, described in step 6 of How-To 7.1. Listing 7.25 frmHowTo7_5.vb: Populating the lstDatabases List Boxes ... Dim oSQLSvr As New SQLDMO.SQLServer() Dim strAttachMsg As String Try oSQLSvr.LoginSecure = True oSQLSvr.Connect(Me.lstSQLServers.SelectedItem) ' Attach the database...
... Value fromSQLServer Problem When you add a row into a SQLServer table that has an identity column, the value assigned to the column in the DataTable is replaced by a value generated by the database. ... updated from the data source to the row matching column names, taking into account any column mappings that might be in place. You can also apply the FirstReturnedRecord when using a batch SQL ... statement. Replace the InsertCommand command constructor for the DataAdapter with the following code: // Create the insert command for the DataAdapter. String sqlText="INSERT Categories(CategoryName,...