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When validating input, forgetting the leading carat can expose a security vulnerability. Use peer code reviews to limit the risk of human error. When validating input, always begin regular expressions with a ^ character and end them with $ . This system ensures that input exactly matches the specified regular expression and does not merely contain matching input.

In Lesson 1, you learned how to use permission demands to restrict access to portions of your code to specific users. Operating systems use ACLs to provide similar functionality. ACLs are the most common technique for restricting access to files, folders, printers, services, registry values, and just about every other operating system resource. As a developer, you must understand ACLs for two important reasons:

USE [AdventureWorks] GO ALTER TABLE dbo.Sales_Summary DROP CONSTRAINT [CK_Summary_ProductLine] GO ALTER TABLE dbo.Sales_Summary CHECK GO WITH CHECK ADD CONSTRAINT [CK_Summary_ProductLine] ((upper([ProductLine])='R' OR upper([ProductLine])='M' OR upper([ProductLine])='T' OR upper([ProductLine])='S'))

System.Web.Services.Protocols.SoapMessage)

Although ISA Server 2004, Enterprise Edition, uses ADAM to store its configuration information, you do not need to install ADAM directly. Instead, it is installed when you install a Configuration Storage server. You will rarely directly access the directory information using the ADAM tools. Instead, you will use ISA Server Management to modify the directory data.

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The SSIS Import/Export Wizard can be started from SSMS, BIDS, or the command prompt. When the wizard is started from within BIDS, the package cannot be immediately executed by the wizard. The wizard can use many data providers (flat file, SQL Native Client, Microsoft OLE DB for SQL Server, and so on) as the source of the data load, the destination of the data load, or both. The packages created by the wizard can either be immediately executed and discarded or saved for later use. You can use the wizard to get a jump start on more robust data-load projects.

While this type of correlated subquery is typically a good implementation, the use of correlated subqueries in the SELECT clause typically has a negative effect on performance. This, of course, depends on the number of rows returned by the query; if a large number of rows is returned, each query in the SELECT clause would be executed for each row. The following query returns 6,224 rows and includes two correlated subqueries. Each of these queries is executed once per row, resulting in a total of 12,448 subquery executions.

WCF logs messages at two levels: Messages are logged as they are entering user code (in the receive side) or as they leave user code (in the send side). At the service level, all messages, including most infrastructure messages, are logged. The exception in the infrastructure messages are that ReliableMessaging messages are not logged. Transport level Messages are logged as they are ready to be encoded or decoded; at the transport level, all infrastructure messages are logged, even those related to reliable messaging.

Implement accessibility features within a Windows Forms application. Configure the PropertyGrid component. Configure the ProgressBar control to indicate progress graphically. Display status information by using the StatusStrip control. Configure the ToolTip component. Configure the ErrorProvider component. Configure the HelpProvider component. Play system sounds and audio files by using the SoundPlayer. Configure the Timer component to raise an event at regular intervals. Enable scrolling by using the HScrollBar and VScrollBar controls.

d. On the Advanced tab, configure the priority for each print device so that printing is distributed among the three print devices.

Backup Storage Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 560

Public PhoneNumber As String <DataMember()> _ Public EmailAddress As String End Class <ServiceContract()> _ Public Interface ISomeService <OperationContract()> _ Function GetProviderContactInfo() As ContactInfo End Interface // C# [DataContract()] public class ContactInfo { [DataMember()] public string PhoneNumber; [DataMember()] public string EmailAddress; } [ServiceContract()] public interface ISomeService { [OperationContract()] ContactInfo GetProviderContactInfo(); }

DSACryptoServiceProvider signer = new DSACryptoServiceProvider();

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