Exam Objectives of Sun Certified Developer for Java Web Services (SCDJWS)
Section 1: XML Web Service Standards
1.1 Given XML documents, schemas, and fragments determine whether
their syntax and form are correct (according to W3C schema) and whether
they conform to the WS-I Basic Profile 1.0a.
1.2 Describe the use of XML schema in J2EE Web services.
1.3 Describe the use of namespaces in an XML document.
Section 2: SOAP 1.1 Web Service Standards
2.1 List and describe the encoding types used in a SOAP message.
2.2 Describe how SOAP message header blocks are used and
2.3 Describe the function of each element contained in a SOAP
message, the SOAP binding to HTTP, and how to represent faults that
occur when processing a SOAP message.
2.4 Create a SOAP message that contains an attachment.
2.5 Describe the restrictions placed on the use of SOAP by the
WS-I Basic Profile 1.0a.
2.6 Describe the function of SOAP in a Web service interaction
and the advantages and disadvantages of using SOAP messages.
Section 3: Describing and Publishing (WSDL and UDDI)
3.1 Explain the use of WSDL in Web services, including a
description of WSDL's basic elements, binding mechanisms and the basic
WSDL operation types as limited by the WS-I Basic Profile 1.0a.
3.2 Describe how W3C XML Schema is used as a typing mechanism in
3.3 Describe the use of UDDI data structures. Consider the
requirements imposed on UDDI by the WS-I Basic Profile 1.0a.
3.4 Describe the basic functions provided by the UDDI Publish and
Inquiry APIs to interact with a UDDI business registry.
Section 4: JAX-RPC
4.1 Explain the service description model, client connection
types, interaction modes, transport mechanisms/protocols, and endpoint
types as they relate to JAX-RPC.
4.2 Given a set of requirements for a Web service, such as
transactional needs, and security requirements, design and develop Web
service applications that use servlet-based endpoints and EJB based
4.3 Given an set of requirements, design and develop a Web sevice
client, such as a J2EE client and a stand-alone Java client, using the
appropriate JAX-RPC client connection style.
4.4 Given a set of requirements, develop and configure a Web
service client that accesses a stateful Web service.
4.5 Explain the advantages and disadvantages of a WSDL to Java
vs. a Java to WSDL development approach.
4.6 Describe the advantages and disadvantages of web service
applications that use either synchronous/request response, one-way RPC,
or non-blocking RPC invocation modes.
4.7 Use the JAX-RPC Handler API to create a SOAP message handler,
describe the function of a handler chain, and describe the role of SAAJ
when creating a message handler.
Section 5: SOAP and XML Processing APIs (JAXP, JAXB, and SAAJ)
5.1 Describe the functions and capabilities of the APIs included
5.2 Given a scenario, select the proper mechanism for parsing and
processing the information in an XML document.
5.3 Describe the functions and capabilities of JAXB, including
the JAXB process flow, such as XML-to-Java and Java-to-XML, and the
binding and validation mechanisms provided by JAXB.
5.4 Use the SAAJ APIs to create and manipulate a SOAP message.
Section 6: JAXR
6.1 Describe the function of JAXR in Web service architectural
model, the two basic levels of business registry functionality
supported by JAXR, and the function of the basic JAXR business objects
and how they map to the UDDI data structures.
6.2 Use JAXR to connect to a UDDI business registry, execute
queries to locate services that meet specific requirements, and publish
or update information about a business service.
Section 7: J2EE Web Services
7.1 Identify the characteristics of and the services and APIs
included in the J2EE platform.
7.2 Explain the benefits of using the J2EE platform for creating
and deploying Web service applications.
7.3 Describe the functions and capabilities of the JAXP, DOM,
SAX, JAXR, JAX-RPC, and SAAJ in the J2EE platform.
7.4 Describe the role of the WS-I Basic Profile when designing
J2EE Web services.
Section 8: Security
8.1 Explain basic security mechanisms including: transport level
security, such as basic and mutual authentication and SSL, message
level security, XML encryption, XML Digital Signature, and federated
identity and trust.
8.2 Identify the purpose and benefits of Web services security
oriented initiatives and standards such as Username Token Profile,
SAML, XACML, XKMS, WS-Security, and the Liberty Project.
8.3 Given a scenario, implement J2EE based web service web-tier
and/or EJB-tier basic security mechanisms, such as mutual
authentication, SSL, and access control.
8.4 Describe factors that impact the security requirements of a
Web service, such as the relationship between the client and service
provider, the type of data being exchanged, the message format, and the
Section 9: Developing Web Services
9.1 Describe the steps required to configure, package, and deploy
J2EE Web services and service clients, including a description of the
packaging formats, such as .ear, .war, .jar, deployment descriptor
settings, the associated Web services description file, RPC mapping
files, and service reference elements used for EJB and servlet
9.2 Given a set of requirements, develop code to process XML
files using the SAX, DOM, XSLT, and JAXB APIs.
9.3 Given an XML schema for a document style Web service create a
WSDL file that describes the service and generate a service
9.4 Given a set of requirements, develop code to create an
XML-based, document style, Web service using the JAX-RPC APIs.
9.5 Implement a SOAP logging mechanism for testing and debugging
a Web service application using J2EE Web Service APIs.
9.6 Given a set of requirements, develop code to handle system
and service exceptions and faults received by a Web services client.
Section 10: General Design and Architecture
10.1 Describe the characteristics of a service oriented
architecture and how Web services fits to this model.
10.2Given a scenario, design a J2EE service using the business
delegate, service locator, and/or proxy client-side design patterns and
the adapter, command, Web service broker, and/or faade server-side
10.3 Describe alternatives for dealing with issues that impact
the quality of service provided by a Web service and methods to improve
the system reliability, maintainability, security, and performance of a
10.4 Describe how to handle the various types of return values,
faults, errors, and exceptions that can occur during a Web service
10.5 Describe the role that Web services play when integrating
data, application functions, or business processes in a J2EE
10.6 Describe how to design a stateless Web service that exposes
the functionality of a stateful business process.
Section 11: Endpoint Design and Architecture
11.1 Given a scenario, design Web service applications using
information models that are either procedure-style or document-style.
11.2 Describe the function of the service interaction and
processing layers in a Web service.
11.3 Describe the tasks performed by each phase of an XML-based,
document oriented, Web service application, including the consumption,
business processing, and production phases.
11.4 Design a Web service for an asynchronous, document-style
process and describe how to refactor a Web service from a synchronous
to an asynchronous model.
11.5 Describe how the characteristics, such as resource
utilization, conversational capabilities, and operational modes, of the
various types of Web service clients impact the design of a Web service
or determine the type of client that might interact with a particular