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Throughout the chapter, I will use the Performance database and its tables in my examples. Run the code in Listing 3-1 to create the database and its tables, and populate them with sample data. Note that it will take a few minutes for the code to finish.

In this code, notice that the calls to Swap do not specify type arguments in less-than/greaterthan signs . In the first call to Swap, the C# compiler was able to infer that n1 and n2 are Int32s, and therefore, it should call Swap by using an Int32 type argument . When performing type inference, C# uses the variable s data type, not the actual type of the object referred to by the variable . So in the second call to Swap, C# sees that s1 is a String and s2 is an Object (even though it happens to refer to a String) . Since s1 and s2 are variables of different data types, the compiler can t accurately infer the type to use for Swap s type argument, and it issues the following message: "error CS0411: The type arguments

Unordered Covering Nonclustered Index Scan 5,095 5,095 5,095 5,095 5,095 5,095 5,095

1. Open Add Or Remove Programs in Control Panel. 2. Click Add/Remove Windows Components. 3. In the Windows Components Wizard dialog box, double-click Networking Services under Components. 4. In the Networking Services dialog box, select Internet Authentication Service. 5. Click OK and then click Next. 6. If prompted, insert your Windows product compact disc. 7. After IAS is installed, click Finish and then click Close. The primary IAS server computer must be able to access account properties in the appropriate domains. If IAS is being installed on a domain controller, no additional configuration is required for IAS to access account properties in the domain to which it belongs. If IAS is not installed on a domain controller, you must configure the primary IAS server computer to read the properties of user accounts in the domain. You can do this by following the next set of procedures.

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1. You install a new application, which reports that it is installing a service on the computer. However, when you run the application for the first time, it is unable to start. You inspect the event log to determine the nature of the problem. You receive an error stating The service did not start due to a logon failure. What should you do a. Grant the account the Logon As A Service right. b. Change the password to the same name as the account. c. Verify the user name of the account being used to run the service. d. Grant the account administrative rights.

In 8, you looked at Ruby s unit testing abilities, and in 12 you used them to test a library you developed. Tests allow you to specify expected outcomes and then to have various elements of functionality (mostly results from methods) tested to see if the actual outcomes match the expectations. If they match, you assume the code is perfect (or as close as it can get!), but if you get errors, you can use the results to debug your code. Rails is particularly well known for its testing features, and a lot of this is due to Ruby s fine unit testing library that you looked at in s 8 and 12. Test suites are run using Rake commands from the root directory of the application, and tests take place under the test environment, meaning that testing operations can take place upon a different database from live data.

Caution Splitting commands over multiple lines by using the minus sign as an escape character is relevant only for SQL*Plus commands, not for SQL commands.

The installed updates page might lead you to believe that no updates have been installed . (For some reason, the No updates are installed on this computer message gives people that impression .) In fact, this page lists only the updates that can be uninstalled . To see a list of all updates that have been installed, return to Windows Update and click View Update History .

Address #2 192.168.1.124 192.168.0.192 172.16.98.234 172.16.72.200

Run sp_Proc1 in InsideTSQL2008, and you will observe that the query ran successfully against the Sales .Orders table in InsideTSQL2008: