An integrity constraint is a declarative way to define a business rule for a column of a table.
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Ans. PHP (Hyper text Pre Processor) is a scripting language commonly used for web applications. PHP can be easily embedded in HTML. PHP ge...
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Public: Public declared items can be accessed everywhere. Protected: Protected limits access to inherited and parent classes (and to t...
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Technically, since HTML is an SGML application, HTML uses SGML comment syntax. However, the full syntax is complex, and browsers don't ...
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Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace
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Many people used to C or Perl complain that they want to use this C idiom: while (line = readline(f)) { ...do something with line... } whe...
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$cur->new()->{LINK} The indirect object syntax only has a single token lookahead. That means if new() is a method, it only grabs the ...
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eregi_replace() function is identical to ereg_replace() except that this ignores case distinction when matching alphabetic characters.ereg...
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0 A defined (but false) 0 value is the proper indication of the end of file for read() and sysread().
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In HTML, a tag tells the browser what to do. When you write an HTML page, you enter tags for many reasons -- to change the appearance of te...
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