1. Copyright © 2004 Pearson Education, Inc.

2. Chapter 26 XML and Internet Databases

3. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-3 FIGURE 26.1 Representing semistructured data as a graph.

4. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-4 FIGURE 26.2 Part of an HTML document representing unstructured data.

5. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-5 FIGURE 26.3 A complex XML element called.

6. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-6 FIGURE 26.4 An XML DTD file called projects.

7. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-7 FIGURE 26.5 An XML schema file called company.

8. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-8 FIGURE 26.5 (continued) An XML schema file called company.

9. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-9 FIGURE 26.5 (continued) An XML schema file called company.

10. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-10 FIGURE 26.5 (continued) An XML schema file called company.

11. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-11 FIGURE 26.6 An ER schema diagram for a simplified UNIVERSITY database.

12. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-12 FIGURE 26.7 Subset of the UNIVERSITY database schema needed for XML document extraction.

13. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-13 FIGURE 26.8 Hierarchical (tree) view with COURSE as the root.

14. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-14 FIGURE 26.9 XML schema document with COURSE as the root.

15. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-15 FIGURE 26.10 Hierarchical (tree) view with STUDENT as the root.

16. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-16 FIGURE 26.11 XML schema document with STUDENT as the root.

17. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-17 FIGURE 26.12 Hierarchical (tree) view with SECTION as the root.

18. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-18 FIGURE 26.13 Converting a graph with cycles into a hierarchical (tree) structure.

19. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-19 FIGURE 26.14 Some examples of XPath expressions on XML documents that follow the XML schema file COMPANY in Figure 26.5.

20. Elmasri and Navathe, Fundamentals of Database Systems, Fourth Edition Copyright © 2004 Pearson Education, Inc. Slide 26-20 FIGURE 26.15 Some examples of XQuery queries on XML documents that follow the XML schema file COMPANY in Figure 26.5.