Presentation slides used during ODTUG Webcast on the 19th of January explaining first steps in Oracle XMLDB (including extended demo's) https://www3.gotomeeting.com/register/660686966

2. Thinking Clearly about XML
Marco Gralike, Principal Database Consultant, AMIS Services BV, NL
Marco Gralike

8. Thinking Clearly about…?
Garbage?
OakTalk: Garbage in / Garbage out ?
Performance?

9. <XML/>

11. “What is the fastest way to get
XML in the database…?”

12. “…it depends…”

13. (30 minutes )

15. Solution?
“…outside the database via Java
and external tables (csv)…”

17. XMLDB
• NO cost option
• C (native & embedded kernel)
• Code maintained by Oracle

18. “So what is the fastest way to get
XML in the database…?”

19. Tricky…?!

20. “So what is the fastest way to get XML in
the database…
… and useful in my case…?”

21. Garbage IN – Garbage OUT

22. Universal in Relational and XML

23. So how do we do this Relationally?

27. So how do we do this in XML?

28. <XML/> != “string”

29. <XML/> = “database”

30. Flexible, Humans
No Design Patterns

31. Strings = small & defined
Ename  pointer += 100;

32. <string1/><string2/><string3/>

33. <small/><verybigggr/><bigger/>

34. <verybigggr>
<empno>1</empno><ename>Marco</ename>
<empno>2</empno>
</verybigggr>
<small/><verybigggr/><bigger/>

38. “XMLType” Container
In Memory CLOB
(document) (document)
Object Relational Binary XML
(data) (data)

39. fast
insert performance CLOB
XMLType
CLOB
(domain) indexes
XMLType
Binary XML
XMLType
Object Relational
fast
select performance

41. Demo

48. Extra Information
Oracle Whitepapers
– Oracle XML DB : Choosing the Best XMLType
Storage Option for Your Use Case (PDF)
– Oracle XML DB : Best Practices to Get Optimal
Performance out of XML Queries (PDF)
Blog or Site
– blog.gralike.com
– Oracle OTN Forum