XQuery Training Overview
Accelebrate's XQuery training teaches attendee how to find, retrieve, and manipulate data in XML documents using XPath and XQuery.
Location and Pricing
Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.
In addition, some courses are available as live, instructor-led training from one of our partners.
Objectives
- Understand the XQuery/XPath data model
- Master the fundamentals of the XQuery/XPath language
- Use path expressions to refer to elements
- Select and filter using FLWORs
- Group combine, and join results
- Work with namespaces
- Manipulate strings of text
- Use functions and modules
Prerequisites
All attendees should understand the fundamentals of XML.
Outline
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XQuery in Context
- What is XQuery?
- Use Cases
- Background and language design
- Easing into XQuery
The XQuery/XPath Data Model
- Nodes
- Atomic values
- Sequences
XQuery/XPath Language Basics
- XQuery syntax and keywords
- Variables
- Function calls
- Comments
- Comparisons
- Conditional expressions (if-then-else)
- The query prolog
Path Expressions
- Axes
- Node tests
- Predicates
- The position() and last() functions
- The doc() and collection() functions
Adding Elements and Attributes Using Constructors
- Direct element constructors
- Direct attribute constructors
- Computed constructors
Selecting and Filtering Using FLWORs
- The for clause
- The let clause
- The where clause
- The return clause
- The order by clause
- Quantified expressions (some/every satisfies)
Grouping, Combining and Joining Results
- Selecting distinct values
- Joining two documents
- Outer joins
- Combining sequences (union, except, intersect)
- Grouping
Working with Namespaces
- Namespaces in XML
- Namespaces in XQuery
Working with Text and Strings
- Comparing strings
- Matching with regular expressions
- Manipulating strings (concatenating, splitting, replacing)
- Understanding whitespace
Functions and Modules
- Calling built-in functions
- User-defined functions
- Library modules
- Global variables
A Closer Look at Types and Schemas
- The XQuery/XPath type system
- Constructors and casting
- Using schemas with XQuery
Conclusion
Training Materials
All XQuery training students receive comprehensive courseware.
Software Requirements
- The XML/XSLT/XQuery editing and transformation environment that your developers will be using after class.
