... Team LiB ] Recipe 9.5 PerformingaBulkInsertwithSQLServer Problem Given many records in an XML file that you need to add to aSQLServer 2000 database, you need to perform abulkinsert ... a XML bulk load operation. The example defines an optional error log file, where the default is an empty string meaning that no error log is created. You can bulk load data into multiple parent-child ... parent-child tables at the same time, a feature that is not available in the OpenXML Transact -SQL extension. For information about the XML Bulk Load component and its methods and properties,...
... the DataSetand thedata source. The DataAdapteris responsible for retrieving the data from the Commandobjectand populating the DataSet with the data returned. The DataAdapteris also ... performance — As any developer knows, performance can make or break almostany application. No matter how much a data access layer may simplify accessing the data,it absolutely must perform nearly ... your database server — for example, a table can only be a table, so why bother to name it assuch? Tables should be named with plurals, such as Ordersinstead of Order. Treat each row of a table...
... 88Manually Populating a DataSet 89Using DataAdapters 89Using DataReaders 90DataTable 90RowState 91DataView 91Serialization 92DataTableReader 93Streaming 93Namespace Qualified Tables 94Indexing ... Engine 94DataSet, DataTable, DataReader, or an Object? 95Showing Data to Users without Any Manipulation 95Editing Data That Lives in One Table 95Editing Data Spread across More Than One Table 9502_584375 ... Chance of Collisions Is High 96Getting One Value from a Database 96Summary 96For More Information 96Chapter 4: Standard Data Types 97Data Types in SQLServer 98CHAR (CHARACTER) 98VARCHAR...
... 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 SQLServer ... understand what aSQLServer 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 a named ... [ Team LiB ] Recipe 1.7 Connecting to a Named Instance of SQLServer or Microsoft Data Engine (MSDE) Problem You want to connect to a named instance of aSQLServer or Microsoft Data Engine...
... shown in Example 9-14. Example 9-14. File: BinaryDataForm.cs // Namespaces, variables, and constants SqlDbType.Image parameter and pass in the BLOB as a Byte array. • Create a DataRow and define ... Create parameter for insert command. SqlParameter prm; if(image != null) { // Add a parameter for the image binary data. prm = new SqlParameter("@BlobData", SqlDbType.VarBinary, ... DataReader has an overload that takes an argument from the CommandBehavior enumeration. Passing the value CommandBehavior.SequentialAccess causes the DataReader to load the data sequentially as it...
... string is passed to a DataAdapter control, filling a data table. The data is then displayed when the data source of the DataGrid control is set to the data table. Comments You can enhance this ... the txtSQLString text and create a data table; then set the ' data source of the data grid. odaDisplay = New OleDb.OleDbDataAdapter(Me.txtSQLString.Text, mcnn) odaDisplay.Fill(dtDisplay) ... btnView_Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btnView.Click Dim odaDisplay As OleDb.OleDbDataAdapter Dim dtDisplay As New DataTable() Try ' Take...
... AuthID First Name Last Name A1 John Brown A2 Matthew Bortniker A3 Rick Johnson A4 Peter Wright A5 James MoonAuthorBookBookIDAuthID1 A1 2 A2 2 A3 3 A4 3 A5 3 A1 Ngoài ra một trong ... and jobs). Cấu Trúc Vật Lý C a Một SQLServer DatabaseMỗi một database trong SQLServer đều ch a ít nhất một data file chính (primary), có thể có thêm một hay nhiều data file phụ (Secondary) ... động lại SQL Server hay khi ta disconnect. • Model : Database này đóng vai trò như một bảng kẻm (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQLServer sẽ...
... (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQLServer sẽ copy toàn bộ cácsystem objects (tables, stored procedures ) từ Model database sang database mới v a ... (SQL) Server nào đó là ta nói đến một Instance c a SQLServer 2000, thông thường đó là Default Instance. Một Instance c aSQLServer 2000có 4 system databases và một hay nhiều user database. ... thay đổi xảy ra trong database.Quá trình này diễn ra như sau: đầu tiên khi có một sự thay đổi data như Insert, Update,Delete được yêu cầu từ các ứng dụng, SQLServer sẽ tải (load) data page...
... system administrator (sa) account. This account is available so you can authenticate as a “sysadmin” via SQLServer Authentication. When you use only the Windows Authentication Mode the sa account ... one for SQLServer and one for the SQLServer Agent. The SQLServer account is used by the SQL database engine which provides all the database related services. The SQLServer Agent account ... provided protection if any portion of the server failed, but there were no load-balancing capabilities. Windows 2000 Advanced Server and Datacenter Server add a “load-balancing” capability to clustering....