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Foreign Key to non-primary key
I have a table which holds data, and one of those rows needs to exist in another table. So, I want a foreign key to maintain referential integrity.
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Context switches much slower in new linux kernels
We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to belie...
Should I use a data.frame or a matrix?
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Why can't yield return appear inside a try block with a catch?
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My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
Among the many things Stack Overflow has taught me is what is known as the "most vexing parse", which is classically demonstrated with a line such as
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When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
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Updating packages in Emacs
I have the following setup for packages (not sure if there is a better recommended one):
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How to compare two floating point numbers in Bash?
...rying hard to compare two floating point numbers within a bash script. I have to variables, e.g.
17 Answers
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Clustered vs Non-Clustered
My lower level knowledge of SQL (Server 2008) is limited, and is now being challanged by our DBAs. Let me explain (I have mentioned obvious statements in the hope that I am right, but if you see something wrong, please tell me) the scenario:
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How to implement has_many :through relationships with Mongoid and mongodb?
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