Results are in from Winter Corporation's 2003 TopTen Program, a survey of the world's largest and most heavily used databases. Winter Corporation, a consulting and research company, focuses on databases near, at or beyond the scalability frontier. The findings are striking and remind us just how far we've come ­ and what lies ahead.

Winter Corporation has tracked the world's leading databases through its survey programs since 1995. Participation is open-ended and impartial. The eligibility requirements for the 2003 program were simple: databases must be in production and contain a minimum of 500GB of data for Windows systems and 1TB for all other operating environments. Winter Corporation defines database size as the sum of user data, summaries, aggregates and indexes; free space and redundancy are not included. Thus, database size represents the amount of actual data, not the complement of disk space.

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