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Databases & Data Management

Since the firm’s founding over 25 years ago, we have invested in some of the most innovative and significant technology companies of our time. Sigma knows what it takes to help entrepreneurs turn creative ideas into sustainable businesses.

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Demandbase, Inc.
Demandbase is the first real-time targeting and personalization platform for B2B, transforming the effectiveness of marketing programs. Demandbase enables B2B marketers to dynamically customize web experiences and engage each web visitor based on their unique business needs.
CEO: Chris Golec
Managing Director: Bob Spinner
San Francisco, CA
Expressor Software Corporation
Founded in 2003, Expressor Software develops next-generation data integration software for the global 2000.
CEO: Robert Potter
Managing Director: John Mandile
Burlington, MA
Noetix Corporation
Provides infrastructure software solutions enabling corporations to automatically map complex, fragmented data and translate it into understandable business information.
CEO: Morris Beton
Managing Director: Peter Solvik
Redmond, WA
Paradigm4
Paradigm4 powers ‘big analytics’ for ‘big data’ in markets like healthcare, life-science research, financial services, digital marketing, web analytics, and insurance telematics. Paradigm4’s integrated data management and analytics software provides massive scalability and speed on public and private commodity hardware grids.
CEO: Marilyn Matz
Managing Director: Robert E. Davoli
Principal: Richard Dale
Waltham, MA
Visual Mining, Inc.
Visual Mining delivers visualization solutions that instantly transform your data into actionable business information. Visual Mining's NetCharts products deliver comprehensive solutions for both developers and end users that are intuitive and effective.
President & CEO: Tristan Ziegler
Principal: Richard Dale
Rockville, MD
VoltDB
Founded by DBMS pioneer Mike Stonebraker, VoltDB provides a very fast, scalable open-source relational database management system for Internet, financial services and other companies that have outgrown the performance limitations of traditional databases.
CEO: Bruce Reading
Managing Director: John Mandile
Billerica, MA