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A beginner's guide to SQL database design [closed]

...fmann Series in Data Management Systems) (Paperback) by Jan L. Harrington and found it very clear and helpful and as you get up to speed this one was good too Database Systems: A Practical Approach to Design, Implementation and Management (International Computer Science Series) (Paperback) I thin...
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How to avoid circular imports in Python? [duplicate]

...know the issue of circular imports in python has come up many times before and I have read these discussions. The comment that is made repeatedly in these discussions is that a circular import is a sign of a bad design and the code should be reorganised to avoid the circular import. ...
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Is there a Java reflection utility to do a deep comparison of two objects?

...te unit tests for a variety of clone() operations inside a large project and I'm wondering if there is an existing class somewhere that is capable of taking two objects of the same type, doing a deep comparison, and saying if they're identical or not? ...
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How to check if the string is empty?

... answered Mar 5 '12 at 20:10 Andrew ClarkAndrew Clark 171k2525 gold badges236236 silver badges278278 bronze badges ...
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Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?

... When it comes to database queries, always try and use prepared parameterised queries. The mysqli and PDO libraries support this. This is infinitely safer than using escaping functions such as mysql_real_escape_string. Yes, mysql_real_escape_string is effectively just a ...
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What are the obj and bin folders (created by Visual Studio) used for?

I created a new project in Visual Studio 2010 and noticed that there are now two new folders named obj and bin in my project directory. ...
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What is a word boundary in regex?

...g Java regexes in Java 1.6 (to parse numeric output, among other purposes) and cannot find a precise definition of \b ("word boundary"). I had assumed that -12 would be an "integer word" (matched by \b\-?\d+\b ) but it appears that this does not work. I'd be grateful to know of ways of matchi...
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What are file descriptors, explained in simple terms?

... open a file, the operating system creates an entry to represent that file and store the information about that opened file. So if there are 100 files opened in your OS then there will be 100 entries in OS (somewhere in kernel). These entries are represented by integers like (...100, 101, 102....). ...
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How do I compile and run a program in Java on my Mac?

How do I compile and run a program in Java on my mac? 5 Answers 5 ...
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Difference between size_t and unsigned int?

I am so confused about size_t . I have searched on the internet and everywhere mentioned that size_t is an unsigned type so, it can represent only non-negative values. ...