NETEZZA PERFORMANCE SERVER CERTIFIED COMPATIBLE WITH THE ASCENTIAL™ ENTERPRISE INTEGRATION SUITE

Complementary Technologies Provide Real-Time Enterprise Data Quality Management

Framingham, Mass.—June 30, 2003—Netezza Corporation and Ascential Software Corporation (Nasdaq: ASCLD), the enterprise data integration leader, have collaborated to provide real-time access to quality data. Netezza delivers the world’s first purpose-built, tera-scale data appliance optimized for the business intelligence needs of data-intensive organizations.

The Netezza Performance Server™ (NPS™) is certified compatible with the Ascential™ Enterprise Integration Suite. The suite combines Ascential Software’s industry-leading solutions for data profiling, data quality and data transformation on a shared platform of software services for unlimited scalability through parallel processing, management of meta data, any-to-any connectivity and real-time data integration. The suite’s unlimited scalability is critical to high-volume, complex data transformation. The combination of Netezza’s rapid querying and Ascential Software’s complete enterprise data integration solution dramatically increases the value that can be derived from company data.

“The ability to access data quickly is only valuable if the data being retrieved is as complete and accurate as possible,” said Foster Hinshaw, co-founder and CTO of Netezza. “With Ascential Software’s strength in enterprise data integration and quality and the NPS appliance’s unparalleled price/performance, this collaboration will allow companies to better extract business intelligence from their data in order to make more informed decisions.”

“Ascential Software’s relationship with Netezza provides mutual customers with another option to maximize the performance of business intelligence applications by enabling rapid analysis of business information,” said Bob Zurek, vice president of Advanced Technology at Ascential Software. “This is consistent with our commitment to reducing costs and increasing ROI for our customers with our suite of enterprise data integration products.”

The NPS appliance is compatible with Ascential™ Real-Time Integration Services, breakthrough technology that extends the reach of the Ascential Software Enterprise Integration Suite by enabling seamless interoperability within an enterprise’s service-oriented architecture (SOA). The suite lets users create and manage high-volume, high-velocity, complex data integration for analytics and enterprise applications such as business intelligence, e-business and data warehousing, customer relationship management (CRM), enterprise application integration (EAI), enterprise resource planning (ERP) and supply chain management (SCM).

Netezza’s flagship product, the Netezza Performance Server™ (NPS™) delivers 10 to 40 times the performance for large, complex and constantly growing BI efforts at half the cost of existing systems. Netezza started with a clean sheet of paper and designed a breakthrough architecture. The NPS system combines servers, storage and database into a single powerful and scalable appliance created from the outset to process queries faster—and enable complex data analysis that was not previously possible because of large and fast-growing data sizes. This new architecture shatters traditional performance benchmarks and many of the technical roadblocks that paralyze today’s patchwork of general-purpose offerings.

About Ascential Software
Ascential Software Corporation is the leading provider of enterprise data integration solutions to organizations worldwide. Customers use the Ascential Enterprise Integration Suite to integrate and leverage data across all strategic analytic and enterprise applications with complete confidence in the accuracy, completeness and timeliness of critical information. Ascential Software’s powerful data profiling, data quality, data transformation, parallel processing, meta data and connectivity solutions enables customers to reduce total cost of ownership and increase return on IT investment. Headquartered in Westboro, Mass., Ascential Software has offices worldwide and supports more than 2,200 customers in such industries as financial services, telecommunications, healthcare, life sciences, manufacturing, consumer goods, retail, and government. More information on Ascential Software can be found at www.ascential.com.

About Netezza Corporation
Netezza delivers the world’s first purpose-built, tera-scale data appliance that enables real time Business Intelligence (BI). The Netezza Performance Server 8000 series delivers 10 to 40 times the performance for large, complex and constantly growing BI efforts at half the cost of existing data warehouse systems. The NPS appliance is being used by data-intensive organizations in wireless telecommunications, financial services, retail, outsourced analytic services and other markets to enable faster, more sophisticated analysis while allowing companies to leverage their existing infrastructure. Founded in 2000 and based in Framingham, Mass., Netezza is led by an experienced management team from several leading technology companies. The Company has raised over $33M from leading venture capital firms, including Matrix Partners, Charles River Ventures and Battery Ventures. For more information about Netezza, please visit www.netezza.com.

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Netezza, the Netezza logo, NPS, Performance Server, Netezza Performance Server, Intelligent Query Streaming, Asymmetric Massively Parallel Processing and AMPP are trademarks or registered trademarks of Netezza Corporation in the U.S. and/or other countries. All rights reserved. Ascential is a trademark of Ascential Software Corporation. All other company, brand and product names contained herein may be trademarks or registered trademarks of their respective holders.

This release contains forward-looking statements based on current expectations or beliefs, and these statements are subject to important factors and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. The forward-looking statements in this release address a variety of subjects including the functionality, characteristics, quality and performance capabilities of Ascential Software's products and technology and results achievable and benefits attainable through deployment of Ascential Software's products. For a detailed discussion of cautionary statements, please refer to the filings made by Ascential Software with the Securities and Exchange Commission, including the most recent Quarterly Report on Form 10-Q. Ascential Software disclaims any intent or obligation to update any forward-looking statements made herein to reflect any change in Ascential Software's expectations with regard thereto or any change in events, conditions, or circumstances on which such statements are based.