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Surrogate vs. natural/business keys [closed]
...ing more than a NOT NULL UNIQUE constraint, and a table can have more than one.
If you use a surrogate key, you still want a business key to ensure uniqueness according to the business rules.
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Can you change what a symlink points to after it is created?
...eferenced by a symbolic link (symlink) — other than by unlinking the old one and creating a new one?
7 Answers
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Hidden Features of C#? [closed]
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This isn't C# per se, but I haven't seen anyone who really uses System.IO.Path.Combine() to the extent that they should. In fact, the whole Path class is really useful, but no one uses it!
I'm willing to bet that every production app has the following code, even thoug...
Can I change all my http:// links to just //?
... the browsers available to test against on Browsershots, I could only find one that did not handle the protocol relative URL correctly: an obscure *nix browser called Dillo.
There are two drawbacks I've received feedback about:
Protocol-less URLs may not work as expected when you "open" a local f...
Having both a Created and Last Updated timestamp columns in MySQL 4.0
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From the MySQL 5.5 documentation:
One TIMESTAMP column in a table can have the current timestamp as the default value for initializing the column, as the auto-update value, or both. It is not possible to have the current timestamp be the default value for one...
When is it appropriate to use C# partial classes?
I was wondering if someone could give me an overview of why I would use them and what advantage I would gain in the process.
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How to differ sessions in browser-tabs?
...and more popular method, but it means that all browser tabs and windows by one user share the session - IMO this is in fact desirable, and I would be very annoyed at a site that made me login for each new tab, since I use tabs very intensively
URL rewriting. Any URL on the site has a session ID appe...
The specified named connection is either not found in the configuration, not intended to be used wit
I have a one entity framework object and when I add it to my project, the connectionstring
is added to app.config in the connectionstring section, but when I want to create new entitycontext and use this connectionstring , this error appears
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How to squash commits in git after they have been pushed?
...t are strictly behind
their remote counterpart). To force a push to only one branch, use a +
in front of the refspec to push (e.g git push origin +master to force
a push to the master branch).
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Difference between webdriver.Dispose(), .Close() and .Quit()
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How did you update your exceptions? Just go to each one and add a quit()?
– Mark Mayo
Jul 23 '13 at 2:12
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