| Re: Tutorial [message #3707 is a reply to message #3706] |
Sun, 21 April 2013 05:59  |
AJM
Messages: 2370
Registered: April 2006
Location: Surrey, UK
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Senior Member |
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DannyBoyPoker wrote on Sun, 21 April 2013 08:57
4) The status quo is that some things are case sensitive.
Fortunately only *SOME* operating systems and *SOME* programming languages are case sensitive. I have been in software development for over 30 years, and nothing which I encountered prior to Unix/Linux was case sensitive. If you think that case sensitivity is a good thing just image what chaos would be caused if email addresses and URLs were case sensitive.
DannyBoyPoker
7) I do not understand, that it is possible to define a foreign key without any constraints?
To me a relationship between two tables allows me to JOIN them in an sql SELECT statement. Thus I can use a column as a foreign key without having to define it as a foreign key.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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