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in SQL. Almost any form of data will fit into any type of column. SQLite ignores the maximum lengths for these VARCHAR columns. This is one reason why SQLite is great for quick and easy development, but not so great for crucial systems!

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def power(x, n): result = 1 for i in range(n): result *= x return result This is a sweet and simple little function, but again you can change the definition to a recursive one: power(x, 0) is 1 for all numbers x. power(x, n) for n > 0 is the product of x and power(x, n-1). Again, as you can see, this gives exactly the same result as in the simpler, iterative definition. Understanding the definition is the hardest part implementing it is easy: def power(x, n): if n == 0: return 1 else: return x * power(x, n-1) Again, I have simply translated my definition from a slightly formal textual description into a programming language (Python).

The id column has the words primary key as its options. This means that the id column is the primary reference to each row and that the id must be unique for each row. In SQLite, this means SQLite will automatically assign a unique id to each row, so you don t need to specify one yourself each time you add a new row.

The size and placement of the screen for a live BBP presentation creates an experience very different from conventional PowerPoint presentations. In conventional presentations, often a small screen sits to the side of a presenter, where it is a nonessential visual aid that could be turned off without much impact on the presentation. Instead, the audience should perceive you as literally inside a large screen, as if it were a stage or a giant television set. Remember that you are a living, engaging presence in a presentation, and you provide the critical audio track that ties everything together. When you step in front of the large screen, you create a hybrid medium that did not exist before. The projected screen makes your abstract thoughts visible, your body keeps the presentation grounded, and your voice guides and informs the experience. After investing so much time in creating your visual media, you absolutely need to make sure that the screen and its placement are appropriate to your presentation. Many conference rooms are not designed well, often placing focus on a chandelier or other architectural element rather than on the media experience you need to produce. Make sure that you communicate what you need to the meeting or event planner. Never allow a screen to be placed on the opposite side of the room from where you are speaking, because this will cause a split-attention effect in which you place unneeded extra cognitive load on the audience by forcing them to continually look back and forth between you and the screen as they work to reconcile the two visual sources of information. Instead, make sure that the screen is directly behind or just off to the side of you so that the light from the data projector does not shine in your eyes.

You use the INSERT command to add rows to tables:

INSERT INTO people (name, age, gender, job) VALUES ("Chris Scott", 25, "Male", "Technician")

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Tip If a function or an algorithm is complex and difficult to understand, clearly defining it in your own words before actually implementing it can be very helpful. Programs in this sort of almost-programminglanguage are often referred to as pseudocode.

First, you specify the table you want to add a row to, then list the columns you wish to fill out, before passing in the values with which to fill the row.

You can omit the list of columns if the data passed after VALUES is in the correct order: