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Surrogate vs. natural/business keys [closed]

... If you have multiple "candidate" keys (fields or same-size collections of fields that are NOT NULL UNIQUE) then you are likely in violation of Boyce-Codd Normal Form. BCNF is beyond 3NF, so not many people worry about it. There are situations, however, where being in BCNF is very helpful....
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xcodebuild says does not contain scheme

I have a curios issue. 10 Answers 10 ...
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How find all unused classes in Intellij Idea?

There is an inspection "Unused declaration" which can find all unused code in Intellij Idea. (see this question ) But I want to find all unused classes, not methods, variables etc. Only classes. (it is difficult to find only classes in 3000 result list). How I can do that? ...
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Capture screenshot of active window?

I am making a screen capturing application and everything is going fine. All I need to do is capture the active window and take a screenshot of this active window. Does anyone know how I can do this? ...
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How to get an outline view in sublime texteditor?

... Hit CTRL+R, or CMD+R for Mac, for the function list. This works in Sublime Text 1.3 or above. share | improve this answer | follow ...
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How do I keep track of pip-installed packages in an Anaconda (Conda) environment?

I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...
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Calculate difference in keys contained in two Python dictionaries

Suppose I have two Python dictionaries - dictA and dictB . I need to find out if there are any keys which are present in dictB but not in dictA . What is the fastest way to go about it? ...
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The application may be doing too much work on its main thread

...I : Fixing skipped frames Anyone who begins developing android application sees this message on logcat “Choreographer(abc): Skipped xx frames! The application may be doing too much work on its main thread.” So what does it actually means, why should you be concerned and how to solve it...
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return, return None, and no return at all?

Consider three functions: 5 Answers 5 ...
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Combining Multiple Commits Into One Prior To Push

This question pertains not only to how to accomplish this task, but to whether doing so is good or bad practice with Git. 6...