"Does rows do something like this.props.updateRowName(this.props.row.id, newName), then the statemanager "queries" the rows and somehow replaces the entire data

"Does rows do something like this.props.updateRowName(this.props.row.id, newName), then the statemanager "queries" the rows and somehow replaces the entire dataset tree with a new one where that specific row's name has been changed?" Exactly. The state manager has "transactions" which are just functions passed down to components. These transactions are transformations on the entire application state, so to change the state you call them with data coming from user interactions and whatnot.