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Before we start our flashback query experiments, we first create a temporary copy of the EMPLOYEES table, as shown in Listing 9-31. (The listing is generated using SQL*Plus). This allows us to perform various experiments without destroying the contents of the real EMPLOYEES table. We also change the NLS_TIMESTAMP_FORMAT parameter with the ALTER SESSION command, to influence how timestamp values are displayed on the screen. Listing 9-31. Preparing for the Flashback Examples SQL> create table e as select * from employees; Table created. SQL> alter session set nls_timestamp_format='DD-MON-YYYY HH24:MI:SS.FF3'; Session altered. SQL> select localtimestamp as table_created from dual; TABLE_CREATED -----------------------------------------------------01-OCT-2004 10:53:42.746 SQL> update e set msal = msal + 10; 14 rows updated. SQL> commit; Commit complete.

Sample of Visual Basic Code Public Shared Sub RegisterRoutes(ByVal routes As RouteCollection) DefaultModel.RegisterContext( _ GetType(NorthwindDataContext), New ContextConfiguration() _ With {.ScaffoldAllTables = True}) routes.Add(New DynamicDataRoute("{table}/{action}.aspx") With { .Constraints = New RouteValueDictionary(New _ With {.Action = "List|Details|Edit|Insert"}), .Model = DefaultModel}) End Sub Sample of C# Code public static void RegisterRoutes(RouteCollection routes) { DefaultModel.RegisterContext(typeof(NorthwindDataContext), new ContextConfiguration() { ScaffoldAllTables = true }); routes.Add(new DynamicDataRoute("{table}/{action}.aspx") { Constraints = new RouteValueDictionary( new { action = "List|Details|Edit|Insert" }), Model = DefaultModel }); }

Here is what the updated source looks like:

HTML includes the <form></form> opening and closing tags for notifying the browser that a section of HTML includes tags representing controls the user will interact with to eventually return information to the server . You use the <form> tag to specify how a Web document will handle input from the end user (not just output) . The contents of the form, which is to say the data contained in the input controls, are posted back to the server for processing . This action is commonly called a postback . This is why the typical HTTP use case for an HTML document is GET, which initially retrieves the document, and then POST (or a modified form of GET), which returns data to the server, if necessary . The <form> tag usually sandwiches a set of tags specifying user input controls . The following shows the same feature selection page you saw earlier but with the <form> tag added (the code is from the file named SelectFeature2 .htm in sample code on the book s companion CD):

Important If you select the option to configure DHCP options later, the wizard does not give you an opportunity to activate the scope. You must activate the scope manually before it can begin leasing addresses.

// The following line displays "System.Byte". Console.WriteLine(Enum.GetUnderlyingType(typeof(Color)));

The Web Parts framework provides a lot of functionality and a variety of built-in Web dialog boxes. The page catalog and the various editor parts are a few examples. Note that in their native format, these dialog boxes have no visual style set. You are responsible for setting borders, fonts, and colors to give them a professional look.

Task<Int32[]> parent = new Task<Int32[]>(() => { var results = new Int32[3]; // Create an array for the results // This tasks creates and new Task(() => results[0] new Task(() => results[1] new Task(() => results[2] starts 3 child tasks = Sum(10000), TaskCreationOptions.AttachedToParent).Start(); = Sum(20000), TaskCreationOptions.AttachedToParent).Start(); = Sum(30000), TaskCreationOptions.AttachedToParent).Start();

If we replace the five variables in this predicate (T, D, P, F, and M) with actual values, the result is a proposition. In logic, a proposition is a predicate without free variables; in other words, a proposition is always true or false. This means that you can consider the rows of a relational table as the set of all propositions that evaluate to true.

Page 136 video, audio, or slides so that all the different elements remain synchronized after they are moved. Figure 8.4 shows how the audio of a speaker s voice that is narrating slides is separated into pieces of audio that correspond to the slides.

Generally, you should avoid working with cursors because they have a lot of overhead that is a drag on performance. However, in this case, unless the partition size is really tiny, the cursor-based solution performs much better than the subquery-based solution because it scans the data only once. This means that as the table grows larger, the cursor-based solution has a linear performance degradation, as opposed to the n2 one that the subquery-based solution has. Still, the cursor-based solution is signi cantly slower than using the ROW_NUMBER function.

shown . One of the hallmarks of object-oriented design and programming is data encapsulation . Data encapsulation means that your type s fields should never be publicly exposed because it s too easy to write code that improperly uses the fields, corrupting the object s state . For example, a developer could easily corrupt an Employee object with code like this: