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  • Let WDSc Help You Format Your Source Code

    August 8, 2007 Ted Holt

    It’s widely accepted throughout the world of programming that indenting source code to show logical structure makes source code easier to read. Program Indentation and Comprehensibility, a study by Richard Miara, Joyce Musselman, Juan Navarro, and Ben Shneiderman, supports this position. Miara, et al, determined that using a two- to four-space indentation scheme improves comprehension by 20 percent to 30 percent. (That’s for humans, of course. The compiler protested that indentation was of no benefit.) Indenting source code is sometimes a nuisance, but it happens that WebSphere Development Studio client (WDSc) can help you indent source code, and can

    …

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  • Which One Is the Culprit?

    August 8, 2007 Hey, Ted

    I am using the MAX function in a SQL statement to get the maximum value from a few columns. I don’t know which element is producing the maximum value. Is there a way to identify the element that has the maximum value?

    –Hisham

    Yes, Hisham. Thanks for allowing me another opportunity to show off that most versatile of SQL features: CASE.

    For the benefit of the readers, here’s the SQL statement Hisham sent to me.

    SELECT max(WK01, WK02, WK03, WK04) FROM SALES
    

    Here’s the sort of results his SQL query generates.

     
    MAX 
    ===
    100 
    120 
    150
    

    He has the maximum

    …

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  • Admin Alert: Eliminating Easy-to-Guess User Passwords

    August 8, 2007 Joe Hertvik

    A chronic System i security problem is that without proper system configuration, users can create easy-to-guess and easy-to-hack passwords when they use the PC5250 Change iSeries Password function, the Change Password command (CHGPWD), or the Change User Profile command (CRTUSRPRF) to change their passwords. This week, I’ll look at some simple system configurations you can perform to ensure that user-created passwords are always sufficiently complex for system security.

    What I Mean By Easily Guessed Passwords

    Easily guessed passwords include any user password that a middle school student could reasonably guess if they just have a little information about the person

    …

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