BURLINGTON, MA, May 29, 2002—Cognos (Nasdaq: COGN; TSE: CSN), the world leader in business intelligence (BI), today announced that Cognos and Harrah's Entertainment have been awarded the coveted Best Practices Award from The Data Warehousing Institute (TDWI). Cognos and Harrah's took top honors in the Justifying a Data Warehouse category for Harrah's Enterprise Data Warehouse that integrates Cognos' market-leading BI solutions.

"Harrah's is honored to accept this prestigious award from TDWI," said John Boushy, Senior Vice President of Operations, Products and Services and Chief Information Officer of Harrah's Entertainment. "Working closely with Cognos has enabled Harrah's to achieve maximum value from our Enterprise Data Warehouse. Our achievements are based on integrated activities that combine leading IT practices, great customer service and the best principles of marketing."

Harrah's Enterprise Data Warehouse project was an essential component of the award-winning Total Rewards® project. Cognos' powerful reporting and analytical capabilities has played an integral role in the success of Harrah's customer relationship management strategy. In just the first two years of the Total Rewards® program, the company saw a $100 million increase in revenue from customers who gambled at more than one Harrah's casino. In addition, the data warehouse provided by Cognos partner Teradata serves as the powerful engine for these applications.

"The Best Practices Award is given to those companies who best exemplify innovation and leadership in their data warehousing and business intelligence projects. Harrah's Entertainment, with Cognos, has clearly demonstrated impressive returns on investment by measuring, analyzing and improving business performance" said Wayne Eckerson, Director of Education and Research, The Data Warehousing Institute.

"TDWI's Best Practices Awards is one of our industry's most prestigious honors and we are very pleased to be selected with Harrah's Entertainment," said Dave Laverty, senior vice president, global marketing, Cognos. "Harrah's clearly recognizes the strategic value of their enterprise BI solution and Cognos is proud to be a contributor to their continued success."

"This prominent industry award to a joint customer is a strong validation of the power of Teradata's partnership with Cognos and indicative of the ROI that our enterprise customers have come to expect," said Paula Basch-Austin, vice president of global alliances for Teradata, a division of NCR.

The Data Warehousing Institute's Best Practices Awards program is designed to identify and honor companies that have demonstrated best practices in developing, deploying, and maintaining data warehouses and business intelligence applications. TDWI's Best Practices winners convey valuable lessons that other data warehousing practitioners and business intelligence professionals can learn from. They help to establish a consensus on industry best practices in various data warehousing disciplines.

About Harrah's Entertainment:
Founded in 1937, Harrah's Entertainment, Inc. operates 25 casinos in the United States, primarily under the Harrah's brand name. Harrah's Entertainment is focused on building loyalty and value with its target customers through a unique combination of great service, excellent products, unsurpassed distribution, operational excellence and technological leadership. More information about Harrah's Entertainment is available on the company's Web site, www.harrahs.com.

About Teradata Division:
Teradata, a division of NCR Corporation, offers powerful analytical solutions that help businesses drive growth. Teradata solutions include the Teradata database, and analytical applications for customer relationship management, operations and financial management, business performance management and e-business. To learn more about Teradata Division and its solutions, go to www.teradata.com.

About NCR Corporation:
NCR Corporation is a leader in providing Relationship Technology^TM solutions to customers worldwide. NCR's Relationship Technology solutions include the Teradata® database and analytical applications such as customer relationship management (CRM) and demand chain management, store automation systems and automated teller machines (ATMs). The company's business solutions are built on the foundation of its long-established industry knowledge and consulting expertise, value-adding software, global customer support services, a complete line of consumable and media products, and leading edge hardware technology. NCR employs 30,300 in more than 100 countries, and is a component stock of the Standard & Poor's 500 Index. More information about NCR and its solutions may be found at www.ncr.com.