.NET/ASP.NET/C#/VB.NET PDF Document SDK

It s easy to lose your focus on the message when there are endless things you could do to ne-tune the PowerPoint le, such as adding more graphical elements, animations, and special effects. One of the major advantages of keeping the basic format of the slides simple, which you did in s 7 and 8, is that a simple design keeps you from being distracted by unnecessary details and the audience from being distracted by too much happening on the screen. Removing distractions leaves you in control of the media instead of the media controlling you. You use PowerPoint well when people don t even notice you use PowerPoint at all. The last thing you want is for someone to compliment you on your slides that would mean that the medium called attention to itself instead of your ideas. The most important outcome of the presentation is that the audience understands the meaning you intend to communicate. When you nish the presentation, you want the audience to talk about your special ideas, not your special effects. Making your media transparent can be a challenge. But just as you work hard to make the story structure invisible within the ow of the story, you also need to work hard to make sure that the other elements of the production are invisible too. That means removing distractions from the entire live presentation experience, beginning when the audience walks into the room and ending when they leave it.

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INSERT INTO people VALUES ("Chris Scott", 25, "Male", "Technician")

Caution This particular INSERT would cause an error on your people table! It s missing the id column.

So what is the point of recursion Can t you just use loops instead The truth is yes, you can, and in most cases it will probably be (at least slightly) more efficient. But in many cases, recursion can be more readable sometimes much more readable especially if one understands the recursive definition of a function. And even though you could conceivably avoid ever writing a recursive function, as a programmer you will most likely have to understand recursive algorithms and functions created by others, at the very least.

It s important to align your PowerPoint presentation with your unique personality so that you make an authentic connection with the audience. For example, when you spend the time to carefully write the story template in your own words, you develop a deep con dence in your story that frees you to improvise your narration and tailor your words to your audience instead of being chained to reading bullet points in the conventional PowerPoint approach. All this leads to a more relaxed and comfortable approach that will make the audience feel more relaxed and comfortable too. A presentation is not a free-for-all, however, so it s important to improvise within the constraints of a speci ed form. This fundamental principle is applied in many arts, including jazz, in which musicians improvise only after they ve mastered the fundamental techniques of the musical form. In a similar way, you can improvise on the constraints de ned in the ground rules presented throughout this book once you ve mastered the basic presentation forms.

However, it s safer and more convenient if you specify the columns beforehand, as in the first example. The second example clearly demonstrates why this is the case, as it s hard to tell which item of data relates to which column. Columns that don t have any data specified for them will be filled in automatically with the defaults specified in the CREATE TABLE statement for that table. In the case of the people table, the id column will automatically receive a unique ID number for each row added.

You use the SELECT command to retrieve data from tables. You specify which columns you want to retrieve (or use * as a wildcard to retrieve them all), the table you want to retrieve data from, and optionally include a condition upon which to base the retrieval. For example, you might only want to choose a particular row, or rows that match certain criteria. This SQL statement retrieves the data from all columns for all rows in the people table:

This SQL retrieves all the values from just the name column of rows in the people table (for example, Fred Bloggs, Chris Scott, Laura Smith ):

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