Usually data has tree structure that saved in game database. ProudNet Database Cache System version 2 is designed for that. ProudNet Database Cache System version 2 handle data with “tree”

Example of saving user account data in DB

This tree is divided into nodes. Of course each nodes has parents/child relation and each nodes has name-parameter pair (Property field) This tree corresponds to database as followed.

From loaded Tree	From database
”1” Node	”1” Record
Type of Node	Name of Table
Property that Node owned	Fields in the record
Parent/Child relation of Node	Required filed in the record

“Table structure for saving user account information to DB”

Table name in root node and table name in child node must be different on top node of data tree that ProudNet Database Cache System version 2 loaded.