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border-bottom:1px solid #aaaaaa; border-top:1px solid #aaaaaa; border-right:1px solid #aaaaaa; font-size:0.9em;"><div style="position:relative; width:14px; height:14px; overflow:hidden;"><div style="position:absolute; font-size:14px; overflow:hidden; line-height:14px; letter-spacing:14px;"><a href="/wiki/CZ:Subpages" title="CZ:Subpages"><span title="CZ:Subpages" style="text-decoration:none;">   </span></a></div><a href="/wiki/File:Subpages.png" class="image" title="CZ:Subpages"><img alt="CZ:Subpages" src="/wiki/images/thumb/1/1f/Subpages.png/14px-Subpages.png" decoding="async" width="14" height="14" srcset="/wiki/images/1/1f/Subpages.png 1.5x" data-file-width="17" data-file-height="17" /></a></div><div style="position:relative; width:14px; height:14px; overflow:hidden;"><div style="position:absolute; font-size:14px; overflow:hidden; line-height:14px; letter-spacing:14px;"><a href="/wiki/Template:Flat_file_database/Metadata" title="Template:Flat file database/Metadata"><span title="Template:Flat file database/Metadata" style="text-decoration:none;">   </span></a></div><a href="/wiki/File:Metadata.png" class="image" title="Template:Flat file database/Metadata"><img alt="Template:Flat file database/Metadata" src="/wiki/images/thumb/4/4f/Metadata.png/14px-Metadata.png" decoding="async" width="14" height="14" srcset="/wiki/images/4/4f/Metadata.png 1.5x" data-file-width="17" data-file-height="17" /></a></div> </td> <td width="100%" style="background-color: #f3f3f3; border-bottom:1px solid #aaaaaa">  </td></tr> <tr> <td height="40px" colspan="20" style="background:#C4D2DF; padding: 2px 2px 2px 2px; border-right:1px solid #aaaaaa; border-bottom:1px solid #aaaaaa"> <table align="right" border="0" cellpadding="2" cellspacing="0"> <tbody><tr> <td><div style="position:relative; width:17px; height:17px; overflow:hidden;"><div style="position:absolute; font-size:17px; overflow:hidden; line-height:17px; letter-spacing:17px;"><a href="/wiki/Template:Flat_file_database/Metadata" title="Template:Flat file database/Metadata"><span title="Template:Flat file database/Metadata" style="text-decoration:none;">   </span></a></div><a href="/wiki/File:Metadata.png" class="image" title="Template:Flat file database/Metadata"><img alt="Template:Flat file database/Metadata" src="/wiki/images/4/4f/Metadata.png" decoding="async" width="17" height="17" data-file-width="17" data-file-height="17" /></a></div> </td> <td><div style="position:relative; width:17px; height:17px; overflow:hidden;"><div style="position:absolute; font-size:17px; overflow:hidden; line-height:17px; letter-spacing:17px;"><a href="/wiki/Flat_file_database/Approval" title="Flat file database/Approval"><span title="Flat file database/Approval" style="text-decoration:none;">   </span></a></div><a href="/wiki/File:Approval_button.png" class="image" title="Flat file database/Approval"><img alt="Flat file database/Approval" src="/wiki/images/b/bc/Approval_button.png" decoding="async" width="17" height="17" data-file-width="17" data-file-height="17" /></a></div> </td></tr></tbody></table><small><i>To learn how to update the categories for this article, see <a href="/wiki/CZ:The_Article_Checklist" title="CZ:The Article Checklist">here</a>. To update categories, edit the <a href="/wiki/Template:Flat_file_database/Metadata" title="Template:Flat file database/Metadata">metadata template</a>.</i> </small> <table width="100%" cellpadding="3" cellspacing="0" bgcolor="#FFFAEF" style="border-top:1px solid #FFBE20"> <tbody><tr> <td><b><font size="2" style="background: #cccccc;border-top:1px solid #bbbbbb; border-bottom:1px solid #dddddd"> <a href="/wiki/CZ:Definitions" title="CZ:Definitions">Definition</a>: </font> </b>A database with only one data table. <span class="plainlinks" style="font-size:0.9em;">[<a href="/wiki/Flat_file_database/Definition" title="Flat file database/Definition">d</a>] [<a rel="nofollow" class="external text" href="https://citizendium.org/wiki/index.php?title=Flat_file_database/Definition&action=edit">e</a>]</span> </td></tr></tbody></table> <table class="collapsible" border="0" width="100%"> <tbody><tr> <th colspan="2" bgcolor="#dddddd" style="border-top:1px solid #aaaaaa"><b>Checklist and Archives</b> </th></tr> <tr> <td> <table width="100%" border="0px" cellpadding="3" cellspacing="0" style="border-collapse:collapse"> <tbody><tr> <td colspan="2"><b><font size="2" style="background: #cccccc;border-top:1px solid #bbbbbb; border-bottom:1px solid #dddddd"> <a href="/wiki/CZ:Workgroups" title="CZ:Workgroups">Workgroup category</a>: </font></b> <a href="/wiki/CZ:Computers_Workgroup" title="CZ:Computers Workgroup">Computers</a><font size="-2"> [Editors asked to check categories]</font> </td></tr> <tr> <td><b><font size="2" style="background: #cccccc; border-top:1px solid #bbbbbb; border-bottom:1px solid #dddddd"> <a href="/wiki/Help:Index/Communication/Talk/Archiving" title="Help:Index/Communication/Talk/Archiving">Talk Archive</a>: </font></b> <i>none</i> </td> <td><b><font size="2" style="background: #cccccc; border-top:1px solid #bbbbbb; border-bottom:1px solid #dddddd"> <a href="/wiki/CZ:English_language_variant" title="CZ:English language variant">English language variant</a>: </font></b> British English </td></tr></tbody></table> </td></tr></tbody></table> <table class="collapsible collapsed" cellpadding="3" border="0" width="100%"> <tbody><tr> <th colspan="3" bgcolor="#dddddd" style="align:center; border-top:1px solid #aaaaaa">Unused subpages </th></tr> <tr> <td><span class="plainlinks"><b><font size="2" style="background: #cccccc;border-top:1px solid #bbbbbb; border-bottom:1px solid #dddddd"> <a href="/wiki/CZ:Subpage#List_of_subpage_types" class="mw-redirect" title="CZ:Subpage">Unused subpages</a>: </font></b> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Bibliography"><font color="darkblue">Bibliography</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/External_Links"><font color="darkblue">External Links</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Works"><font color="darkblue">Works</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Discography"><font color="darkblue">Discography</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Filmography"><font color="darkblue">Filmography</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Catalogs"><font color="darkblue">Catalogs</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Timelines"><font color="darkblue">Timelines</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Gallery"><font color="darkblue">Gallery</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Audio"><font color="darkblue">Audio</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Video"><font color="darkblue">Video</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Code"><font color="darkblue">Code</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Tutorials"><font color="darkblue">Tutorials</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Student_Level"><font color="darkblue">Student Level</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Signed_Articles"><font color="darkblue">Signed Articles</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Function"><font color="darkblue">Function</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Addendum"><font color="darkblue">Addendum</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Debate_Guide"><font color="darkblue">Debate Guide</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Advanced"><font color="darkblue">Advanced</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Recipes"><font color="darkblue">Recipes</font></a> - <a rel="nofollow" class="external text" href="https://citizendium.org/wiki?action=edit&preload=Template%3ASubpages_name&title=Flat_file_database/Citable_Version"><font color="darkblue">Citable Version</font></a></span> </td></tr></tbody></table> </td></tr></tbody></table></div> <h2><span class="mw-headline" id="References">References</span></h2> <p>The things I wrote about here are old textbook stuff and work experience for me, so I hope further sources will not be needed. But if people think it is needed, and are able to provide such references - fine! <a href="/wiki/User:Olav_N%C3%A6ss" title="User:Olav Næss">Olav Næss</a> 02:51, 8 April 2007 (CDT) </p> <dl><dd>I would think we'd need to find at least several valid sources, to at least help someone e.g writing a paper on databases. Or possibly a "See Also" or "External Links" section --<a href="/wiki/User:Eric_M_Gearhart" title="User:Eric M Gearhart">Eric M Gearhart</a> 04:30, 8 April 2007 (CDT)</dd></dl> <h2><span class="mw-headline" id="flat_file_or_text_file">flat file or text file</span></h2> <p>the earliest flat files that were used as files to store information, used and created for instance by cobol where just plain text strings. The original name reflected that difference as these were NO database. I wonder what made someone think the earlier mentioned flat file (text) databases has got anything to do with relations as they stem from the 50's and early 60's. These files were indicated, not two dimensional arrays of information with their own local formatting. Flat file text database files got their meaning by the program that created and used them. Something totally different from the files here. <a href="/wiki/User:Robert_Tito" title="User:Robert Tito">Robert Tito</a> | <span style="background:grey"> <font color="yellow"><b><a href="/wiki/User_talk:Robert_Tito" title="User talk:Robert Tito">Talk</a></b></font> </span> 18:36, 20 June 2007 (CDT) </p> <dl><dd>I'm a little confused as to the point of this article. What's wrong with having a flat file be a flat file, without any DBMS terminology? When I first touched a computer, there were some complex structures in main memory, but on a mass storage device, there was nothing except flat files. Yes, it was possible to go to an individual record, if you had some sort of index.</dd></dl> <dl><dd>There were quite complex report generators (e.g., MARK IV) that ran against flat files, but it was a new kind of thinking when I started working in <a href="/wiki/index.php?title=MUMPS&action=edit&redlink=1" class="new" title="MUMPS (page does not exist)">MUMPS</a>, which actually let tree-structured data be written to disk while preserving the structure. Indexed sequential was common enough in the early seventies, as well as direct access with the index stored as a flat file that got slurped into memory and constructed as linked lists, trees, etc.</dd></dl> <dl><dd>When I first started using things that were called "databases", they were application-specific, such as MEDLINE, MARC, RECON, and other bibliographic systems. I'm actually hard-pressed to remember when commercial RDBMS started showing up as routine tools...early 80's? <a href="/wiki/User:Howard_C._Berkowitz" title="User:Howard C. Berkowitz">Howard C. Berkowitz</a> 19:47, 6 August 2008 (CDT)</dd></dl>  </div> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://citizendium.org/wiki/index.php?title=Talk:Flat_file_database&oldid=23295">https://citizendium.org/wiki/index.php?title=Talk:Flat_file_database&oldid=23295</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Categories</a>: <ul><li><a href="/wiki/Category:Article_with_Definition" title="Category:Article with Definition">Article with Definition</a></li><li><a href="/wiki/Category:Computers_Category_Check" title="Category:Computers Category Check">Computers Category Check</a></li><li><a href="/wiki/Category:Developing_Articles" title="Category:Developing Articles">Developing Articles</a></li><li><a href="/wiki/Category:Nonstub_Articles" title="Category:Nonstub Articles">Nonstub Articles</a></li><li><a href="/wiki/Category:Internal_Articles" title="Category:Internal Articles">Internal Articles</a></li><li><a href="/wiki/Category:Computers_Developing_Articles" title="Category:Computers Developing Articles">Computers Developing Articles</a></li><li><a href="/wiki/Category:Computers_Nonstub_Articles" title="Category:Computers Nonstub Articles">Computers Nonstub Articles</a></li><li><a href="/wiki/Category:Computers_Internal_Articles" title="Category:Computers Internal Articles">Computers Internal Articles</a></li><li><a href="/wiki/Category:Computers_Underlinked_Articles" title="Category:Computers Underlinked Articles">Computers Underlinked Articles</a></li><li><a href="/wiki/Category:Underlinked_Articles" title="Category:Underlinked Articles">Underlinked Articles</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden category: <ul><li><a href="/wiki/Category:Computers_tag" title="Category:Computers tag">Computers tag</a></li></ul></div></div> </div> </div> <div id="mw-navigation"> <h2>Navigation menu</h2> <div id="mw-head"> <nav id="p-personal" class="vector-menu mw-portlet mw-portlet-personal vector-user-menu-legacy" aria-labelledby="p-personal-label" role="navigation" > <h3 id="p-personal-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Personal tools</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="pt-login" class="mw-list-item"><a href="/wiki/index.php?title=Special:UserLogin&returnto=Talk%3AFlat+file+database" title="To edit pages, [[Special:RequestAccount|get a contributor account]]. 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