What's a good way to model user authorization to hierarchical data?
  
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    -           en.wikipedia.org/wiki/Data_model   Cached Hierarchical model: In this model data is organized into a tree-like structure, ... The figure illustrates the way data models are developed and used today. 
 
 
 
-     php.bigresource.com/Hierarchical-Data...Nested-Set-Model...  Hierarchical Data In MySQL - Nested Set Model? ... Multiple Trees With Hierarchical Data (Left And Right Values) ... Best Way To Loop Through Data To Make Nested Lists ? 
 
-     www.slideshare.net/billkarwin/models-for-hierarchical-data   Cached  It's a good idea to do some more experiments to do this measurement, ... Models for hierarchical data ... What’s the cause ... 
 
-     www.opengroup.org/public/arch/p4/views/vus_data.htm   Cached  Major concerns for this view are understanding how to provide data to the right people ... Structures data in a consistent way ; ... The hierarchical data model ... 
 
-     msdn.microsoft.com/en-us/library/fa1h9d0d(v=VS.85).aspx   Cached  All data controls can use either the new data-binding model ... data to provide a hierarchical view for users, ... authorization, providing high-level ways for ... 
 
-     searchoracle.techtarget.com/answer/Network-hierarchical...   Cached  In the hierarchical model, data is stored in a defined hierarchy. For instance, ... But that turned out to be a good thing. Financial Applications. 
 
-     www.tech-faq.com/data-management.html   Cached  ... some of the more popular topics include data modeling, ... users might have a hierarchical structure of objects that include ... Please keep up the good way. 
 
-     www.ibm.com/developerworks/library/x-matters8/index.html   Cached  On the way to making a point about how XML is best suited to work with databases, David Mertz discusses how XML fits with hierarchical, relational, and object ... 
 
-     www.cisco.com/en/US/products/ps6638/products_data_sheet...   Cached  AAA provides a modular way of performing authentication, ... a user; authorization determines ... within the RADIUS model. DIAMETER does not use the same ... 
 
-     stackoverflow.com/questions/728137   Cached  Essentially, I want the user to be able to define a hierarchical model, but then I need to allow the user to store data within their defined model. 
 
-     stackoverflow.com/questions/1740107/convert-flat-data...   Cached  I have a data model from my database. ... What's a good way to express hierarchical grouping of widgets in Python? 0. ... Super User; Web Applications; Ask Ubuntu; 
 
-     stackoverflow.com/questions/38801   Cached  What's the best way to ... Values for left and right are calculated by dividing ... Have you extended nested sets for hierarchical data modeling involving ...