The document discusses and provides examples of different types of tree structures that can be used to represent hierarchical data, including classical node-link diagrams, nested sets, layered "icicle" diagrams, outlines and tree views, and nested parentheses. It lists the names Salvador & Ana, Annalyn, Charlene, and Jason in examples of each structure type.

1. Assignment in ITEC 214 Annalyn D.Joven AIT 2-1

2. Classical node-link diagrams Salvador & Ana Annalyn Charlene Jason

3. Nested Sets + - - - - - - - - - - - - - - - - - + l Salvador & Ana I +- - - - - - - - - - - - - - - - - - - - + l Annalyn l Charlene l Jason l + - - - - - - - - - - - - - - - - - - - - +

4. Layered “icicle” diagram +- - - - - - - - - - - - - - - + l Salvador & Ana l +- - - - - - - - - - - - - - - - + l Annalyn l Charlene l +- - - - - - - -+- - - - - - - -+ l Jason l +- - - - - - - -+

5. Outlines and tree views Salvador & Ana Annalyn Charlene Jason

6. Nested Parenteses ( Annalyn , Charlene , Jason ) Salvador & Ana