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Creator QR in visual basic almost always map the data automatically, which saves you a lot of time and headaches.

Summary

You can view the available options classes by selecting Define User Classes, Define Ven dor Classes, or Set Predefined Options from the server node shortcut menu. By default, the options you can configure for a reservation, scope, or server are those that belong to the DHCP Standard Options vendor class and to the Default User Class user class.

As shown here, you build a visual formula out of the icons by sketching a plus sign after the rst icon and an equal sign after the second element. You can also sketch the numbers 1-2-3 or the letters A-B-C alongside each icon to relate that familiar organizational structure to the audience and build the formula 1+2=3 or A+B=C. If your headlines support the concept, create an unexpected formula that will play out in the presentation such as 1+1=11, which will intrigue your audience as they wait to see how you will explain what it means.

Do note that Silverlight treats the image as if it were transparent so that if you rotate the image in 3-D in a way that would make it appear that you have flipped the image and are now looking at its back, you would see the inverse of the image. If you change the rotation to 135 degrees from the previous example, you would see something like what is shown in Figure 5-14.

SELECT INTO outOrdersRow order_id, total_amount, created_on, shipped_on, status, comments, customer_name, shipping_address, customer_email FROM orders WHERE order_id = inOrderId; RETURN outOrdersRow; END; $$; This function returns the information necessary to fill the form in the admin_order_details componentized template. 4. Use the query tool to execute this code, which creates the order_details type and the orders_get_order_details function in your hatshop database: -- Create order_details type CREATE TYPE order_details AS ( order_id INTEGER, product_id INTEGER, product_name VARCHAR(50), quantity INTEGER, unit_cost NUMERIC(10, 2), subtotal NUMERIC(10, 2) ); -- Create orders_get_order_details function CREATE FUNCTION orders_get_order_details(INTEGER) RETURNS SETOF order_details LANGUAGE plpgsql AS $$ DECLARE inOrderId ALIAS FOR $1; outOrderDetailsRow order_details; BEGIN FOR outOrderDetailsRow IN SELECT order_id, product_id, product_name, quantity, unit_cost, (quantity * unit_cost) AS subtotal FROM order_detail WHERE order_id = inOrderId LOOP RETURN NEXT outOrderDetailsRow; END LOOP; END; $$; The orders_get_order_details function returns the list of products that belong to a specific order. This will be used to populate the table containing the order details, situated at the bottom of the page. 5. Use the query tool to execute this code, which creates the orders_update_order function in your hatshop database:

9 rows selected. SQL> At first sight, you might think that both of these solutions are correct. However, the results are different. Now, which one is the correct solution You can come up with convincing arguments for both solutions. Note that you have three course offerings with a null value in the TRAINER column. If you interpret these null values as trainer unknown, you can never say with certainty that an employee never taught a course. The second query obviously treats the null values differently. Its result (with nine employees) is what you probably expected.

Setting NTFS permissions without understanding the full consequences can lead to unexpected and unwelcome results, including a complete loss of access to files and folders . The permission-setting capabilities of the Sharing wizard provide far greater flexibility and power than were possible in the basic Windows XP interface . Before you delve into the inner workings of NTFS permissions on the Security tab, be sure to try the Sharing tab (with the Sharing wizard enabled) . If you do work directly with NTFS permissions without the wizard s assistance, you ll find that working with the built-in permission sets Full Control, Modify, and so on is the safest strategy . If you plan to tinker with special permissions, set up a folder and fill it with test files so that you can experiment safely . When you re certain you ve worked out the correct mix of permissions, apply them to the folders containing your real working files and delete the test folder .

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Overview Even after I wrote the first edition of this book, I got many, many questions about memory corruption and memory leaks, and I still do. If developers would just stop using memory in their programs, they wouldn't have so many problems. Right. And if we'd all stop breathing, we'd never have any trouble with our lungs. Memory is the elixir of life for your C and C++ programs, and if you want to do more about memory corruption and memory leaks than just wish they would go away, you need to be proactive about handling them. The first step you need to take is to learn how to use the Microsoft debug C run-time library. The complexities of memory debugging are legendary and one of the prime motivators for Microsoft to develop the .NET concept. With memory taken care of for you because of the common language runtime (CLR) garbage collector, .NET eliminates probably 50 percent of the bugs you'd normally deal with in the Microsoft Win32 and Microsoft Win64 world. Of course, if raw speed is vital to your application, you'll be dealing with C++ and potential memory woes for a long time to come. Developers working in C and C++ get to have all the fun of wrangling memory. C and C++ offer all sorts of programming freedom, but they also provide the opportunity to do much more than just shoot yourself in the foot; you can blow off your whole leg when you make even a small mistake. Fortunately, the C run-time (CRT) library developers heard our cries of anguish and, starting a million Internet years ago with Microsoft Visual C++ 4, have built in a wonderful feature: the debug CRT (DCRT) library. Oddly enough, many C and C++ developers don't seem to realize that the DCRT library exists. The reason the library is something of a mystery is that by default much of it is turned off. Once you get the proper flags switched on, however, you'll find out what you've been missing. In this chapter, I'll start by introducing the DCRT library and build two extensions, MemDumperValidator and MemStress, that will provide you with even more functionality while you're using the library. After introducing the DCRT, I'll discuss the various issues related to memory debugging such as the operating system heaps, how to track down wild writes, and how to use these free and amazing tools from Microsoft that help you with memory issues: the PageHeap and the Application Verifier. Finally, as I promised in 2, I'll cover the amazing run-time check (/RTCx) and security (/GS) switches now offered by Visual C++ to make your memory debugging and security better than ever. Features of the Debug C Run-Time Library The main claim to fame for the DCRT library is its wonderful heap memory tracking support. All the memory allocated through standard C/C++ memory allocation functions, such as new, malloc, and calloc, can be tracked in debug builds. The tracking checks for memory underwrites, in which your program writes past the beginning of a block of memory, and memory overwrites, in which your program writes past the end of a block of memory. All those errors are reported through an assertion from the DCRT itself. The tracking also monitors and reports memory leaks in your application when the application ends because of calls to OutputDebugString, whose output appears in the Output window of the debugger. If you've been writing Microsoft Foundation Class (MFC) library programs, you've probably noticed the memory leak reports when your application ends; those leak reports come from the DCRT library. MFC partially turns on the DCRT library for you automatically. 616

Finally, correcting the bug, here's how the solution query should look: SELECT ShipperID, CompanyName FROM dbo.Shippers AS S WHERE ShipperID NOT IN (SELECT O.ShipVia FROM dbo.Orders AS O WHERE O.CustomerID = N'LAZYK');

Notice that the view state values are hashed, compressed, and encoded for Unicode implementations. This provides better optimization and more security than just simple HTML hidden fields.

Running MMC Consoles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1052 MMC Consoles and UAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1053 Running a Console in Author Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1054 Running a Console and Specifying a Target Computer . . . . . . . . . . . . . . . . . . . . . . . 1055 Using MMC Consoles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1056 Creating Your Own MMC Consoles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1059 Running MMC with No Snap-In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1059 Displaying the Console Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1060 Adding Snap-Ins and Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1060 Adding Taskpad Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1066 Managing Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1067 Controlling Other Display Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1068 Using the Favorites Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1068 Naming Your Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1068 Restricting User Control of Your Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1069 Saving a Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1070

As mentioned, if ASP.NET runs under IIS 6.0 using the IIS 6.0 process model, the worker process is not aspnet_wp but the w3wp.exe executable, which is an integral part of the IIS 6.0 platform. In this case, the default account is not ASPNET but NETWORKSERVICE, which has the same limited set of privileges. The aspnet_filter.dll component is a small Win32 ISAPI filter used to back up cookieless session states for ASP.NET applications. In Windows Server 2003, when the IIS 6.0 process model is enabled, it also prohibits requests for nonexecutable resources located in critical directories under the application root folder. Examples of protected directories include Bin, Code, Resources, and Data. The optional aspnet_state.exe service is more vital to Web applications because it has to do with session state management. It can be used to store session state data outside of the Web application memory space. The executable is a Windows NT service that can be run locally or remotely. When the service is active, an ASP.NET application can be configured to store any session information into the

In the Console Mode list on the Console tab of the Options dialog box (choose File, Options), you can select among MMC s three User modes. In any of these modes, users can t add or remove snap-ins, modify taskpad views, or make other changes to the console. The difference among the modes is how much of the console tree they re able to see and whether they can open new windows.

<macrodef name="export-data"> <attribute name="driver" /> <attribute name="url" /> <attribute name="username" /> <attribute name="password" /> <attribute name="target-dest" default="setup/data/dbunit" /> <attribute name="filename" default="dataExport" /> <sequential> <dbunit driver="@{driver}" url="@{url}" userid="@{username}" password="@{password}"> <export dest="@{target-dest}/@{filename}.xml" format="xml" /> <classpath> <path refid="dbunit.class.path" /> </classpath> </dbunit> </sequential> </macrodef> To create a sample dataset you can either populate the database by hand (by writing SQL INSERT statements), or you can use the Hibernate-mapped POJOs to set the database s initial state. Once you have the database in the desired state, execute the macro, and the XML file will capture the state of the database. Listing 8-20 shows a target using the macrodef previously defined. Listing 8-20. Ant Target Using the DbUnit Macrodef <!-- =================================================================== --> <!-- Target: export-db --> <!-- Exports the contents of the test database --> <!-- =================================================================== --> <target name="export-db" description="Exports the content of the test database"> <target-banner target="export-db"/> <export-data driver="${test.db.driver}" url="${test.db.url}" username="${test.db.username}" password="${test.db.password}" /> </target> For example, if we load some data in the address table and run the Ant target, the resulting DbUnit XML data set will resemble the output shown in Listing 8-21.