Talk:Hierarchical database model

message: The text doesn't reflect the lemma: Hierarchical model should describe the logical elements only, but the introduction for example talks about database management systems. --S.K. 17:39, 24 Jun 2005 (UTC)
thread_title:  Reason for <nowiki>{{Cleanup}}</nowiki> 

message: Is LDAP considered to follow the hierarchical model?
From the LDAP article:
LDAP directory entries feature a hierarchical structure that reflects political, geographic, and/or organizational boundaries. In the original X.500 model, entries representing countries appear at the top of the tree; below them come entries representing states or national organizations. Typical LDAP deployments use DNS names for structuring the top levels of the hierarchy. Further below might appear entries representing people, organizational units, printers, documents, or just about anything else.
Yes, definitely LDAP is hierarchical. So is DNS. In fact, DNS, LDAP, and common filesystems are by far the most widely used hierarchical databases. The topic's claim that IMS and Windows Registry are the most common is laughable.  — Preceding unsigned comment added by 140.90.235.252 (talk) 23:06, 28 July 2011 (UTC)
thread_title:  LDAP 

message: but each child only has two parents
Doesn't each child only have one parent??? —The preceding unsigned comment was added by 83.65.35.100 (talk) 12:37, 12 January 2007 (UTC)
replies: text: Yes- this is a mistake. Alex Jackl 15:41, 25 March 2007 (UTC)
thread_title:  Mistake? 

message: I replaced the pluralization of data in the intro paragraph because data is still considered officially to be a plural noun.   I do appreciate though that it is creeping into common usage to treat it as a singular collective noun.  i believe in the end that may even win over but it is currnetly incorrect to tlak about "Data is".  It should be "Data are".  See Data.  Alex Jackl 15:41, 25 March 2007 (UTC)
thread_title:  You say Data, I say Datum 

message: It's partially-inverted list - I used to work for them. I'm deleting the list item.Philcha 22:06, 19 October 2007 (UTC)
thread_title: Adabas not hierarchical

message: There are other kinds of hierarchical models, for example the hierarchical statistical models used in Bayesian data analysis. These should be mentioned.
Also a tree structure is a bit limiting. Yes there are higher and lower levels in the hierarchy, but the structure needn't be a tree. Look at organisation charts, a kind of hierarchical model; there are usually plenty of dotted lines as well as the conventional parent-child relations.
--84.9.67.105 (talk) 09:31, 11 April 2008 (UTC)
thread_title:  A bit narrow 

message: Remove the disgusting example of a company keeping track of their employees chilren, unless you specify that the company in the example is comitting a crime.  —Preceding unsigned comment added by 85.225.210.121 (talk) 08:12, 22 May 2009 (UTC)
thread_title: Bad example

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