To Find Nodes (Kinships) I am going to express query finding kinship nodes by the following tree structure data. [A], [B], ... indicated in figure means nodes. DEPTH| 0 | [A]--+-----------+ | | | 1 | [B]--+---+ [C]--+---+ | | | | | 2 | [D]…

To Find Nodes (Descendants) I am going to express query finding subtree nodes by the following tree structure data. [A], [B], … indicated in figure means nodes. DEPTH| 0 | [A]--+-----------+ | | | 1 | [B]--+---+ [C]--+---+ | | | | | 2 | [D…

To Find Nodes (Ancestors) I am going to express query finding ancestor nodes by the following tree structure data. [A], [B], ... indicated in figure means nodes. DEPTH| 0 | [A]--+-----------+ | | | 1 | [B]--+---+ [C]--+---+ | | | | | 2 | […

I am going to write core design of Fertile Forest Model. This content is was reprinted with permission from the official site of the Fertile Forest Model. Model Design FF model is designed by new idea. Matrix Of Hierarchical Structure I am…

Additional Columns Conventional database engineers had studied four models for solving the problem to store hierarchical data in a database. They are: Adjacency List Model Path Enumeration Model Nested Set Model Nested Intervals Model Clos…

Roles Of Model The role of the model to store hierarchical data in RDB are summarized in two paragraphs as: To store the hierarchical data in RDB table. To write the query to find the relevant nodes efficiently for any nodes. (1) To Store …