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Local A local user profile is available only on the computer on which it was cre ated. A unique local user profile is created and stored on each computer to which a user logs on. Both Windows XP Professional and Windows XP Home Edition support local user profiles. Roaming Roaming profiles are stored in a shared folder on a network server and are accessible from any location in the network. Only Windows XP Profes sional supports roaming user profiles. Mandatory Mandatory user profiles are roaming user profiles that users cannot make permanent changes to. Mandatory profiles are used to enforce configuration settings. Only Windows XP Professional supports roaming user profiles.
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// C# public class StorageArchiveProxy : DuplexClientBase<IStorageArchive>, IStorageArchive { public StorageArchiveProxy( InstanceContext instanceContext, Binding binding, EndpointAddress epAddr) : base(instanceContext,binding, epAddr) { } public StorageArchiveProxy( InstanceContext instanceContext, string endpointConfigurationName) : base(instanceContext,endpointConfigurationName) { } public void RequestFileRetrieve(string fileName) { this.Channel.RequestFileRetrieve(fileName); } }
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Designing SQL Server Security in the Enterprise
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For times when you need to change data, you will need a writer lock. To acquire a writer lock, follow these steps: 1. Create an instance of the ReaderWriterLock class to be shared across any threads. 2. Create a try/catch block (catching an ApplicationException). This try/catch block will be used to catch the exception if the acquisition of the writer lock reaches the timeout. 3. Inside the try/catch block, acquire the writer lock by calling ReaderWriterLock .AcquireWriterLock. 4. After acquiring the writer lock, create a try/finally block to hold any writing code. 5. Do any work you need within the try part of the try/finally block. 6. In the finally part of the try/finally block, release the writer lock with ReaderWriterLock.ReleaseWriterLock.
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<system.serviceModel> <behaviors> <endpointBehaviors> <behavior name="LoggingEndpointBehavior"> <messageLogger /> </behavior> </endpointBehaviors> </behaviors> <extensions> <behaviorExtensions> <add name="messageLogger" type="assembly.LoggingBehaviorExtensionElement, assembly, Version=, Culture=neutral, PublicKeyToken=null"/> </behaviorExtensions> </extensions> </system.serviceModel>
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Lesson 4: Performing Bulk Copy Operations
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6 Review
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Michael Hotek The phone rang at 12:30, just as I was heading out for a lunch meeting with a customer. We were going to discuss a possible week-long project to analyze the customer s application for performance issues. It was the customer on the other end of the line. His ordering system couldn t accept orders. The servers were running, and SQL Server was online. Queries were coming in, but they were taking so long to execute that applications were timing out or customers were going elsewhere. So, 30 minutes later, I was in the company s office instead of at lunch. While I was driving to the office, I asked the DBAs to launch a SQL Server Profiler trace to begin gathering data. After I reached the office, we saved the current trace data and began the analysis process. We immediately found two stored procedures that were creating most of the issues but not all of them. We also found that someone in the marketing department had connected Microsoft Office Access to the company s production database and was running several queries. Unfortunately, the marketing staffer had neglected to join tables together and was executing cross joins instead. Of course, no one in the company would admit to running any queries against production data. After removing the marketing department user s access, customers could suddenly complete orders, but performance was still an issue. Based on our Profiler traces, we tuned the two procedures that were degrading performance the most. Although these quick fixes didn t solve all of the company s performance issues, which we resolved over the next three weeks, they did patch the performance problems enough that customers could complete orders on the company s Web site instead of taking their business to the competitors.
Lesson Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Estimated lesson time: 60 minutes
24 Introducing Windows 7 for Developers
To further practice and reinforce the skills you learned in this chapter, you can perform the following tasks:
Media pools
Lesson 1: Creating and Configuring List-Display Controls
Questions and Answers
As you begin the process of setting up a SQL Server 2008 BI environment, you are planning out your hardware architecture. Your solution will consist of an SSRS installation that will access online analytical processing (OLAP) data in SSAS built from a SQL Server data mart. Your manager has approved two blade servers for SSRS so that the service can be configured for scale-out deployment that will help to balance the workload and will provide some load balancing. Additionally, your system administrator has set up Network Load Balancing (NLB) to distribute the report requests. How will you handle the following two setup requirements
The simplest way to specify these values is to pass them to the Rfc2898DeriveBytes constructor. After initialization, you can retrieve a key by calling the Rfc2898DeriveBytes .GetBytes method. GetBytes accepts the number of bytes to return as an integer. When deriving a key, determine the length based on the number of bits required by the algorithm object s KeySize and BlockSize properties. Note that both KeySize and BlockSize are defined as a number of bits, whereas the Rfc2898DeriveBytes.GetBytes method requires a number of bytes. You must divide the number of bits required for the key by 8 to determine the number of bytes required. Besides the key, the encryption algorithm must also have the same IV specified at both the encryptor and decryptor. For optimal security, when only a password is shared between the encryptor and decryptor, you should also generate the IV based on the password. Whereas the length of the key being generated must be based on the KeySize property, the length of the IV must be based on the encryption algorithm s BlockSize property. The following sample code generates a key and IV for the myAlg SymmetricAlgorithm object using a static password, which should be provided by the user in practice:
The Coho Vineyard network consists of a single Active Directory domain named Within this domain, each winery has its own OU.
You can use Push to add items to the Stack, but the items must match the type specified in the generic type parameter of the Stack. You can also use Pop to retrieve items of the Stack type. For example, this Stack stores integers:
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