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Data Web Services on WebSphere Application Server, Part 3: Leverage DB2 trusted context support using Data Studio

Use IBM Data Web Services together with the DB2 trusted context feature

Michael Schenker, Software Engineer, IBM
Michael Schenker is a software engineer at IBM's Silicon Valley Laboratory in San Jose, Calif. He joined IBM in 2002 and works in the IBM Data Server Tooling area. His subject of expertise is the Web service enablement of IBM's data servers. He holds a Master's degree in computer sciences from the University of Applied Sciences in Leipzig, Germany.
Namrata Misra (nammisra@us.ibm.com), Software Engineer, IBM
Namrata Misra is a software developer in the Information Management Group. She joined IBM in 2005 as an intern. Her specialties include Java, XML, Web services, and databases. She is one of the developers for Data Web Services, which come with IBM Data Studio.

Summary:  Common problems in J2EE applications that access databases occur around end-to-end authentication and authorization, as well as the end-to-end audit path. The concepts of data sources and connection pools provide many advantages, but they can also lead to security breaches. This vulnerability happens because, after the security layer of the application server has been passed, all requests are usually mapped to one common user ID to access the database. A new feature called trusted context, available in DB2® 9.5, allows users to leverage the benefits of connection pooling without sacrificing security. This tutorial describes how you can use that feature with a Data Web Services Web application.

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Date:  22 May 2008
Level:  Intermediate
PDF:  A4 and Letter (353 KB | 15 pages)Get Adobe® Reader®

Activity:  8023 views
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Before you start

Learn what to expect from this tutorial, and how to get the most out of it.

About this series

IBM® Data Studio helps you to service-enable your SQL statements or stored procedures to help fully integrate your data server into an SOA. Part 1 in this series showed you how to create a Web service that selects and updates data in a DB2 database. Part 2 of this series described how to enable the Web service for transport-level security. In this tutorial, you will learn how to leverage the trusted context feature of DB2 to provide end-to-end authorization and authentication for your Web services.

IBM WebSphere® Application Server is one of the possible target platforms for Data Web Services. This series of tutorials helps you to leverage the full power of Data Web Services in combination with WebSphere Application Server by using some of the enhanced features that are provided by WebSphere Application Server and DB2 for security, performance, and reliability.

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About this tutorial

In this tutorial, you will learn how to leverage the trusted context feature of DB2 to provide end-to-end authorization and authentication for your Web services. This tutorial takes approximately one hour to complete. Two more tutorials will follow to discuss Web service security and Web service atomic transactions.

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Objectives

This tutorial provides the following information:

  • A brief introduction to the DB2 trusted context feature
  • Information about how to set up WebSphere Application Server to use DB2 trusted context
  • A demonstration of how DB2 trusted context works together with WebSphere Application Server and the Data Web Services application by turning on the JCC trace in WebSphere Application Server

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Prerequisites

This tutorial is written for database programmers who are familiar with IBM Data Studio and know how to create a database connection, a data development project, and SQL scripts or stored procedures. Before you start this tutorial, you should also complete "IBM Data Studio: Get started with Data Web Services" (developerWorks, Nov 2007) and "Enable transport-level security" (developerWorks, May 2008). Basic knowledge of WebSphere Application Server and J2EE are recommended.

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System requirements

To run the examples in this tutorial, you must install IBM Data Studio 1.1.2 and WebSphere Application Server Version 6.1 (Fix Pack 11). You must also install DB2 for z/OS Version 9 or DB2 for Linux, UNIX, and Windows Version 9.5 and create the sample database.

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