specifying locking hints in a sql server database

... 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 ... dataGrid.DataSource = null; [ Team LiB ] Recipe 6.14 Specifying Locking Hints in a SQL Server Database Problem You need to pessimistically lock rows in an underlying SQL Server database. ... command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da);...

Ngày tải lên: 17/10/2013, 20:15

... conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); ... on a resource. Locks ensure transactional integrity and database consistency by preventing other users from changing data being read by a user and preventing users from reading data being changed ... statement. READCOMMITTED Use the same locking as a transaction with an isolation level of READ COMMITTED. READUNCOMMITTED Same as NOLOCK. REPEATABLEREAD Use the same locking as a transaction...

Ngày tải lên: 14/12/2013, 18:16

... 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 gồm: • Master : Ch a tất cả những thông tin cấp hệ thống ... Thiết 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; ... and jobs). Cấu Trúc Vật Lý C a Một SQL Server Database Mỗi một database trong SQL Server đều ch a ít nhất một data file chính (primary), có thể có thêm một hay nhiều data file phụ (Secondary)...

Ngày tải lên: 25/08/2012, 09:00

... (SQL) Server nào đó là 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. ... (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQL Server sẽ copy toàn bộ các system objects (tables, stored procedures ) từ Model database sang database mới v a ... 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

... 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 ... System.Data.SqlClient; class MySqlConnection { public static void Main() { // formulate a string containing the details of the // database connection string connectionString = " ;server= localhost ;database= Northwind;uid=sa;pwd=sa"; ... using System; using System.Data; using System.Data.SqlClient; class ConnectionPooling { public static void Main() { // create a SqlConnection object to connect to the database, ...

Ngày tải lên: 07/11/2013, 10:15

... 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 ... object. You can produce information and error messages using the SQL Server PRINT or RAISERROR statements, which are described in Chapter 4 , "Introduction to Transact- SQL Programming." ... StateChangeEventArgs 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...

Ngày tải lên: 14/12/2013, 13:15

... SqlDataAdapter da = new SqlDataAdapter(sqlText, conn); // Add table mappings. da.TableMappings.Add("Table", "Orders"); da.TableMappings.Add("Table1", "Order Details"); ... Microsoft SQL Server Books Online. The GetSchemaTable( ) method of the DataReader also returns all column lengths. The method returns a DataTable containing column metadata for a DataReader, where ... // Create the DataSet. DataSet ds = new DataSet( ); // Fill the schema and data. da.FillSchema(ds, SchemaType.Mapped); da.Fill(ds); // Iterate over the table collection in the DataSet....

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

... Download a shareware database management tool You need a database management tool to create Microsoft SQL Server database and to export/import the Contact List. You can download the Aqua Data Studio ... connecting to the database sql scripts Each of the database types has a sql file that you need to: 1. Modify to point to the right database. 2. Run to create the database and the tables ... either the embedded database (McKoi), or an external database. If you chose the embedded database, you can change to a different one by creating a new database and configuring it to be used with...

Ngày tải lên: 20/12/2013, 23:15

Ngày tải lên: 24/12/2013, 06:17

Ngày tải lên: 21/01/2014, 11:20

Ngày tải lên: 21/01/2014, 12:20

... Database Wizard 153 Create Database Wizard: Name the Database and Specify Its Location 155 Create Database Wizard: Name the Database Files 155 Create Database Wizard: Define the Database File Growth ... 168 Reviewing the Southwind Configuration 168 Using T -SQL to Create and Alter a Database 169 Monitoring and Maintenance 171 Database Maintenance Plan Wizard 171 Maintenance Plan Wizard: Select Databases ... 172 Maintenance Plan Wizard: Update Data Optimization Information 172 Maintenance Plan Wizard: Database Integrity Check 174 Maintenance Plan Wizard: Specify the Database Backup Plan 175 Maintenance...

Ngày tải lên: 18/10/2013, 18:15

... categories Category Description Date and Time Alters current session settings for handling of date and time data Locking Alters current session settings for handling SQL Server locking Miscellaneous ... settings for using SQL- 92 default settings Statistics Alters current session settings for displaying statistics Transactions Alters current session settings for handling SQL Server Transactions ... SHOWPLAN_TEXT (from the Query Execution category) is ON, SQL Server returns a result set containing detailed information about how the SQL statements are going to be executed rather than actually...

Ngày tải lên: 28/10/2013, 18:15

... View menu. 2. Create a connection to the database or select an existing connection. 3. Select and expand the node for the database that contains the stored procedure. 4. Expand the Stored Procedures ... Use Visual Studio .NET to debug SQL Server stored procedures (in both standalone mode and from managed code). Discussion Debugging a stored procedure in standalone mode You can debug a stored ... [ Team LiB ] Recipe 9.8 Debugging a SQL Server Stored Procedure Problem Given an application that uses a SQL Server stored procedure that is causing errors, you need...

Ngày tải lên: 07/11/2013, 13:15

... multiple tables, as shown in Figure 7.9. Figure 7.9. Transferring tables between SQL Server databases. ListBox Name lstToSQLServer Label Name Label3 Text Transfer from Database ListBox Name lstFromDB ... SourceDatabase DestinationServer DestinationUseTrustedConnection DestinationDatabase CopyAllObjects IncludeDependencies IncludeLogins IncludeUsers DropDestinationObjectsFirst ... lstToSQLServer. Listing 7.18 frmHowTo7_4.vb: Calling the Routine That Loads Available SQL Servers into a List Box Private Sub frmHowTo7_4_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)...

Ngày tải lên: 07/11/2013, 15:15

... use the ADO Command object, as well as the Parameter object if you are passing parameters. You will create a Command object and supply the command text, which in this case will be the name of ... will match the one specified in CustOrdersHist, called CustomerID. You can see the actual code for this routine, called UseAStoredProcedureWithAParameter, in Listing A. 8. Listing A. 8 basCommandExamples.vb: ... Command object you are creating -in this case by using the type of ADODB.CommandTypeEnum.adCmdStoredProc. The next step is to create a parameter that the Command object will use. This parameter...

Ngày tải lên: 14/12/2013, 20:16