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Can anyone tell me what the 'restrictions' actually are?
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The whole article is outdated, but I lack the editorial skill/technological knowledge to fix it. Rails has marvelous tools for generating hierarchical databases in a relational context, and then using the flexibility of Ruby easily represent the db. NoSQL has also raised the issue of database architecture in new ways. I almost feel like the article should start from scratch, and then hope that people mod into into currency (rather than throwing up their hands at its series of missteps) <span style="font-size: smaller;" class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/24.14.168.220|24.14.168.220]] ([[User talk:24.14.168.220|talk]]) 15:43, 6 October 2013 (UTC)</span><!-- Template:Unsigned IP --> <!--Autosigned by SineBot-->
==Bad example==
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The example also uses bad logic. Logically, a child has at least two parents (biologically) and those two parents could potentially work for the same company. Creating duplicate entries in the Child table would be less effective. I thought hierarchical referred more to a subclass/superclass relationship; e.g. the relationship between person and employee.
== External links modified ==
Hello fellow Wikipedians,
I have just modified one external link on [[Hierarchical database model]]. Please take a moment to review [[special:diff/808536817|my edit]]. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit [[User:Cyberpower678/FaQs#InternetArchiveBot|this simple FaQ]] for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20081108151540/http://www.kamfonas.com/id3.html to http://www.kamfonas.com/id3.html
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Cheers.—[[User:InternetArchiveBot|'''<span style="color:darkgrey;font-family:monospace">InternetArchiveBot</span>''']] <span style="color:green;font-family:Rockwell">([[User talk:InternetArchiveBot|Report bug]])</span> 13:17, 3 November 2017 (UTC)
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