Doctrine PHP ORM Features

Hierarchical Data

With Doctrine you can transform your models in to a nested set tree. It offers a full API for administering the nodes in your tree. For our purposes, hierarchical data is a collection of data where each item has a single parent and zero or more children (with the exception of the root item, which has no parent). Hierarchical data can be found in a variety of database applications, including forum and mailing list threads, business organization charts, content management categories, and product categories.