October 2000
Intermediate to advanced
812 pages
21h 21m
English
Content preview from Building Oracle XML ApplicationsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 5. Processing XML with PL/SQL
PL/SQL is Oracle’s procedural language extension to SQL, and is the database programming language familiar to nearly all Oracle DBAs and application developers. In this chapter, we’ll study lots of examples that illustrate how to perform basic XML processing using PL/SQL. In particular, we’ll learn how to:
Load external XML files into the database
Parse XML using the Oracle XML Parser for PL/SQL
Search XML documents in memory using XPath expressions
Post an XML message to another server and get an XML response back
Enqueue and dequeue XML messages from Oracle Advanced Queuing (AQ) queues
In addition, in this chapter we’ll cover the basic mechanics of producing XML automatically from SQL queries and transforming the results into any desired XML format using XSLT stylesheets. Both of these topics are covered in full in their own chapters later in the book. For an abbreviated overview of PL/SQL itself, see Chapter 10.
Along the way, we’ll build up several useful PL/SQL packages that you can use to simplify basic XML processing from within your own PL/SQL stored procedures, functions, packages, and database triggers. The full source code for these XML helper packages appears in Appendix A, and is available on the O’Reilly web site. Let’s dive right in.
Loading External XML Files
When a developer is setting out to store the contents of an XML document in the database to perform queries over its content and structure, one of the first questions that arises ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.