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Elements and Performance Criteria

Required Skills

Required skills

analytical skills to

analyse functional requirements

assess proposed web service architectures within the context of existing enterprise technologies infrastructure and industry standards

determine appropriate enabling technologies required to implement a web services functional requirements

determine appropriate web service architectures as prescribed by the selected proprietary or industry standards

determine development environments appropriate to planned web service architectures and functionality

communication skills to

describe and evaluate web service architectures with system analysts and enterprise architects

negotiate enterprise web service requirements with clients

negotiate resource requirements project timeframes and project deliverables

propose web service functionality to meet the business needs of clients

learning skills to

acquire the skills and knowledge required for the implementation of web services

stay at the cutting edge of industry developments and industry standards

literacy skills to

interpret associated industry and web service standards

interpret existing enterprise technology infrastructure documentation

write functional requirement specifications for a web service

planning and organising skills to

plan an effective solution for a web service

organise resources documentation and infrastructure elements required for the implementation of a web service

problemsolving skills to

debug code identify code bugs and resolve all code exceptions

identify and implement solutions to problems with web service architecture and functionality

identify problems with XML document schemas and implement solutions

recommend solutions to problems or deficiencies associated with the implementation of web services

research skills to

enhance knowledge of industry standards and trends related to web service architectures and enabling technologies

identify and locate sources of information that provide solutions to technical problems

identify sources of information and documentation required to plan and implement a web service

technical skills to

implement complex code algorithms required for web service functionality

implement exception handling routines in code

refactor code to improve the efficiency of the code

use an integrated development environment to build web service components

write code to implement a web service

Required knowledge

integrateddevelopment environments

web development technologies

webservice architecture

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Evidence of the ability to

transform data from relational or other native data sources into XML

validate an XML document using a predefined schema

provide access to business functionality via a WSDL file

locate a public web service business function and include it in a website using UDDI and SOAP

implement a web service

according to business requirement specifications

that adheres to industry standards

Context of and specific resources for assessment

Assessment must ensure access to

web service business requirement specifications

industry standards published by the WC

platformspecific documentation and help files describing the syntax and use of proprietary technologies

a simulated development environment incorporating the following elements

relational database server

integrated development environment IDE including related frameworks APIs and associated proprietary classes required to implement web services and their enabling technologies

XPath testing utilities

appropriate learning and assessment support when required

modified equipment for people with special needs

Method of assessment

A range of assessment methods should be used to assess practical skills and knowledge The following examples are appropriate for this unit

written or verbal questioning to assess candidates knowledge of XML data structures syntax and validation techniques

observation of candidate demonstrating

data transformation from relational data to validated XML

the use of XPath queries to extract information from XML or transform XML data structures

evaluation of candidates project incorporating all elements of this unit of competency including both web service publication and web service consumption

Guidance information for assessment

Holistic assessment with other units relevant to the industry sector workplace and job role is recommended where appropriate

Assessment processes and techniques must be culturally appropriate and suitable to the communication skill level language literacy and numeracy capacity of the candidate and the work being performed

Indigenous people and other people from a nonEnglish speaking background may need additional support

In cases where practical assessment is used it should be combined with targeted questioning to assess required knowledge

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

XML data structures may include:	electronic business XML (ebXML) XML 1.0 specification produced by the world wide web consortium (W3C).
Various data sources may include:	comma separated value files native data sources, such as ASCII or the Java-type system object linking and embedding (OLE) DB data sources, such as spreadsheet files relational database management systems, such as: IBM DB2 Microsoft Structured Query Language (MS SQL) server Microsoft Access MySQL Oracle Ingres.
Common application programming interface may include:	ASP.Net and MSXML and associated APIs Java XML API (JAXP) simple API for XML (SAX) document object model as described by W3C recommendation.
Schema may include:	document type definition (DTD) schema file XML schema definition (XSD) file as described by W3C recommendation XML-data reduced (XDR) schema definition file.
Map and transform may include:	eXtensible stylesheet language transformations (XSLT) XLink XPath 1.0 and XPath 2.0 queries XPointer XQuery.
Three main elements may include identifying:	contents and data types of web service messages operations of web service messages protocols of web service messages.
Public web service may include:	public web services located through UDDI registries.
Publish may include:	limiting access to the web service to a local intranet making the web service available to the internet via a public UDDI registry simulating the publication of the web service through a virtual machine infrastructure.