Graphs of Semistructured Data ▣Nodes=objects Labels on arcs (like attribute names). Atomic values at leaf nodes (nodes with no arcs out). Flexibility:no restriction on: ■Labels out of a node, Number of successors with a given label. 22 Graphs of Semistructured Data † Nodes = objects. † Labels on arcs (like attribute names). † Atomic values at leaf nodes (nodes with no arcs out). † Flexibility: no restriction on: „ Labels out of a node. „ Number of successors with a given label