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Foreign Key to non-primary key
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If you really want to create a foreign key to a non-primary key, it MUST be a column that has a unique constraint on it.
From Books Online:
A FOREIGN KEY constraint does not have to be linked only to a PRIMARY
KEY constraint in...
Unit Testing: DateTime.Now
...t testing with static state, always remember to tear down your fixture by calling TimeProvider.ResetToDefault().
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How to make a new List in Java
... up the list interface in the Java documentation to get a definite list of all the classes that implement List: docs.oracle.com/javase/7/docs/api/java/util/List.html
– David Mason
Jun 10 '14 at 14:10
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Saving and Reading Bitmaps/Images from Internal memory in Android
... } catch (Exception e) {
e.printStackTrace();
} finally {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return directory.getAbsolutePath();
}
Explanation :
1.The D...
How do I run a simple bit of code in a new thread?
...it does. What it does, is configure whether the thread will be killed when all foreground threads have died, or whether the thread will keep the application alive. If you don't want your thread terminated mid-execution, do not set IsBackground to true.
– Zero3
...
for each loop in Objective-C for accessing NSMutable dictionary
... I was wondering, should'nt it have been: for (NSString* key in [xyz allKeys]) ?? Or does it not really matter.
– FlowUI. SimpleUITesting.com
Apr 2 '12 at 4:23
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Dropping Unique constraint from MySQL table
... out the name of the index. The name of the index is stored in the column called key_name in the results of that query.
Then you can use DROP INDEX:
DROP INDEX index_name ON tbl_name
or the ALTER TABLE syntax:
ALTER TABLE tbl_name DROP INDEX index_name
...
iOS (iPhone, iPad, iPodTouch) view real-time console log terminal
...y github account at
https://github.com/benvium/libimobiledevice-macosx/zipball/master
Follow the install instructions here:
https://github.com/benvium/libimobiledevice-macosx/blob/master/README.md
Connect your device, open up Terminal.app and type:
idevicesyslog
Up pops a real-time display of t...
How to understand Locality Sensitive Hashing?
...commend the below slide:
http://www.cs.jhu.edu/%7Evandurme/papers/VanDurmeLallACL10-slides.pdf .
The example in the slide helps me a lot in understanding the hashing for cosine similarity.
I borrow two slides from Benjamin Van Durme & Ashwin Lall, ACL2010 and try to explain the intuitions of LS...
How do I change the background color with JavaScript?
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For answering literally: the question was about changing the color of the background, not all of the background.
– Wolf
Jul 23 '15 at 11:31
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