The question is. Some nestled calculation. How did club freedom did the calculation, or how will the database structure looks like? *The example is -: * *Joseph* gave birth to *John*, *James,* and *Johnson* *John* gave birth to* Peter*, *Matter*, and *Potter* James gave birth to Juliana, Justin, and *Jane* Johnson gave birth to Jak, Jake and Jacob Continuously like that, Peter the son of John also gave birth to another 3 children And the 3 children also keep giving birth to 3 children each, so How can I calculate the Total descendants of Joseph? How can I calculate the total descendants of John or any of the grand children? Because each of the children also start having grand children, while Joseph grand descendants increases. I want to use MySql/PHP The concept is Like http://www.disneytreasures.biz/ or ClubFreedom All I want to do is to know who bring who?