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Nullable Foreign Key bad practice?

... read. Only if you know better than Chris Date "what first normal form really means". If x and y are both nullable, and indeed in some row x and y are both null, then WHERE x=y does not yield true. This proves beyond reasonable doubt that null is not a value (because any real value is always equ...
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Visually managing MongoDB documents and collections [closed]

... have to keep searching for documents, copy-and-pasting OIDs, etc., especially from a command prompt window (ever tried to "mark" text that wraps multiple lines?) ...
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Can anyone explain what JSONP is, in layman terms? [duplicate]

...nly used to bypass the cross-domain policies in web browsers. (You are not allowed to make AJAX requests to a web page perceived to be on a different server by the browser.) JSON and JSONP behave differently on the client and the server. JSONP requests are not dispatched using the XMLHTTPRequest an...
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Keyboard shortcuts with jQuery

... Since this question was originally asked, John Resig (the primary author of jQuery) has forked and improved the js-hotkeys project. His version is available at: http://github.com/jeresig/jquery.hotkeys ...
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JavaFX and OpenJDK

...s a modular library accessed from an existing JDK (such as an Open JDK installation). The open source code repository for JavaFX is at https://github.com/openjdk/jfx. At the source location linked, you can find license files for open JavaFX (currently this license matches the license for OpenJDK...
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Why do Java webapps use .do extension? Where did it come from?

...oach will be described below. Prefix matching means that you want all URLs that start (after the context path part) with a particular value to be passed to this servlet. Such an entry might look like this: <servlet-mapping> <servlet-name>action</servlet-name> ...
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IIS7: HTTP->HTTPS Cleanly

Is there a clean way to redirect all attempts to going to an HTTP:// version of a site to its HTTPS:// equivalent? 6 Answer...
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What are some good resources for learning about Artificial Neural Networks? [closed]

I'm really interested in Artificial Neural Networks, but I'm looking for a place to start. 16 Answers ...
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How to detect which one of the defined font was used in a web page?

... I've seen it done in a kind of iffy, but pretty reliable way. Basically, an element is set to use a specific font and a string is set to that element. If the font set for the element does not exist, it takes the font of the parent element. So, what they do is measure the width of the rende...
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Can I Replace Apache with Node.js?

...l suspects (Apache, MySQL, and PHP). Since the time this website was originally launched, it has evolved quite a bit and now I'd like to do fancier things with it—namely real-time notifications. From what I've read, Apache handles this poorly. I'm wondering if I can replace just Apache with Node.j...